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Description
374 Solder Feed System 0.6mm (with V-groove)The 374 Solder Feed System provides control of the solder amount by feed time and feed speed, giving you one handed soldering with no loss of efficiency. Click to view the combinations of accessories required for the 373 374 Solder Feed System. *Soldering station and iron not included. NEW Introducing the new tube unit and guide pipe assembly for the best productivity. Features V Groove to minimize solder and flux splash When solder is cut with a V
The 374 Solder Feed System provides control of the solder amount by feed time and feed speed, giving you one-handed soldering with no loss of efficiency.
Click to view the combinations of accessories required for the 373/374 Solder Feed System. *Soldering station and iron not included.
NEW Introducing the new tube unit and guide pipe assembly for the best productivity.
Features
V-Groove to minimize solder and flux splash
When solder is cut with a V-groove, it enables the release of gas pressure generated by the flux, suppressing flux splash. However, a V-groove will expose the flux to air, reducing the storage life of the solder. With the 374, you can groove only the solder you require to lengthen the solder life span.
AUTO or MANUAL mode
AUTO mode: Feeds solder in the specified time and at the specified speed once the switch is pressed.
MANUAL mode: Feeds solder at the specified speed while the switch is pressed and held.
Control of solder amount
Amount of solder feed can be controlled by the combination of feed "time" and feed "speed". (Only in AUTO mode)
'Solder-return' mechanism
The 374 is equipped with the function to draw back solder by the specified length after feeding. This reduces the thermal impact of the high-temperature tip on solder and flux. Click to read more about 'Solder-Return'.
One-Handed Soldering
Unlike traditional manual soldering, where one hand holds the soldering iron and the other feeds the solder wire, the tube unit and guide pipe assembly allows for both functions to be done with just one hand. Click to learn about our new tube unit and guide pipe assembly!
Required optional parts
- Solder Diameter Adjustment Ring
- Tube Unit
- Guide Pipe Assembly
- Iron receptacle
For two-handed soldering (Soldering with a feeder pen)
The auto-solder feed system with the feeder pen enables the control of amount of solder to feed. It is useful for any type of soldering iron.
Required optional parts
- Solder Diameter Adjustment Ring
- Feeder Pen
- Switch
Specifications
- Power consumption: 6W
- Solder feed time: 0 to 7second (Auto Mode)
- Solder feed speed: 4.5 to 26mm/sec.
- Solder feed quantity: 0 to 182mm
- Solder return quantity: 0 to 5mm (Fixed speed)
- Modes: Auto/Manual
- Usable solder diameter: Φ0.6, Φ0.65, Φ0.8, Φ1.0, Φ1.2mm
- Usable solder quantity: 1kg or less
- Dimensions: 107(W)×110(H)×215(D)mm
- Weight: 1.5kg (with cord)
Accessories
Replacement Parts
| Part Number | Product Name |
| B1699 | 0.6mm Nozzle |
| B1700 | 0.8mm Nozzle |
| B1701 | 1.0mm Nozzle |
| B1702 | 1.2mm Nozzle |
| B1703 | 1.6mm Nozzle |
Optional Parts
| Part Number | Product Name |
| C5056 | Tube Unit, Bottom-feed type. 0.6-1.0mm with hexagon wrench |
| B5268 | Guide pipe assembly/ bottom-feed type, for C5056.0.6mm, 0.65mm |
| B5269 | Guide pipe assembly/ bottom-feed type, for C5056. 0.8mm |
| B5270 | Guide pipe assembly/ bottom-feed type, for C5056, 1.0mm |
| C5057 | Tube Unit, Bottom-feed type. 1.2mm with hexagon wrench |
| B5271 | Guide pipe assembly/ bottom-feed type, for C5057. 1.2mm |
| C5058 | Tube Unit, Bottom-feed type. 0.6-1.0mm with hexagon wrench |
| B5272 | Guide pipe assembly/ bottom-feed type, for C5058. 0.6mm, 0.65mm |
| B5273 | Guide pipe assembly/ bottom-feed type, for C5058, 0.8mm |
| B5274 | Guide pipe assembly/ bottom-feed type, for C5058.1.0mm |
| C5059 | Tube Unit, Bottom-feed type. 1.2mm with hexagon wrench |
| B5275 | Guide pipe assembly/ bottom-feed type, for C5059, 1.2mm |
| B5265, B5266, B5267 | Iron receptacle for bottom-feed type (with screws) |
| B1626 | Solder diameter adjustment ring. 0.6mm, 0.65mm |
| B1627 | Solder diameter adjustment ring. 0.8mm |
| B1628 | Solder diameter adjustment ring. 1.0mm |
| B1629 | Solder diameter adjustment ring. 1.2mm |
| B1630 | Solder diameter adjustment ring. 1.6mm |
|
B3481, B3726, B5072, B3566, B1694, B2146, B2151 |
Guide pipe assembly. 373 : 0.6mm, 0.65mm / 374 : 0.6mm |
| B3482, B3727, B5073, B3567, B1695, B2147, B2152 |
Guide pipe assembly. 0.8mm |
| B3483, B3728, B5074, B3568, B1696, B2148, B2153 |
Guide pipe assembly. 1.0mm |
| B3484, B3729, B5075, B3569, B1697, B2149, B2154, |
Guide pipe assembly. 1.2mm |
| B3570, B1698, B2150, B2155 |
Guide pipe assembly. 1.6mm |
| B3477 | Tube unit M with switch, 0.6-1.0mm. Requires spacer B5183 for FX-1001 (sold separately). |
| B3563 | Tube unit R, with switch, 0.6-1.0mm |
| B3564 | Tube unit S, with switch, 373 : 1.2-1.6mm / 374 : 1.2mm |
| B3478 | Tube unit N, with switch, 1.2mm. Requires spacer B5183 for FX-1001 (sold separately). |
| B1957 | Tube unit E, with switch, 0.6-1.0mm |
| B1958 | Tube unit F, with switch, 373 : 1.2-1.6mm / 374 : 1.2mm |
| B2143 | Tube unit J, with switch, 0.6-1.0mm |
| B2144 | Tube unit K, with switch, 373 : 1.2-1.6mm / 374 : 1.2mm |
| B5183 | Spacer for FX-1001 tube unit |
| C1234 | Feeder Pen A, 0.6-1.0mm |
| C1235 | Feeder Pen B, 1.2-1.6mm |
| B2124 | Feeder Switch |
| FT-720 | Tip Cleaner |
| B1649 | Foot Switch |
Discontinued Parts
| Product Name | Part Number |
| Guide Pipe Assembly | B1674, B1675, B1676, B1677, B1678, B1679, B1680, B1681, B1682, B1683, B1684, B1685, B1686, B1687, B1688, B1689, B1690, B1691, B1692, B1693 |
| Tube Unit | B1631, B1672, B1632, B1673 |
| Spring Iron Holder | B1648 |
| Iron Holder with Cleaning Sponge | 631-07 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 3
Seat angle problem
Color: Black, Style: Classic
This chair is very good. Has exactly the dimensions I was looking for. Overall it looks very well made, excellent quality, easy to install. I'm not giving it 5 starts because I'm not liking the angle of the seat very much. It goes low at the back end and at the front it is very high. It feels really good when I'm working on my computer where I have 1 widescreen monitor with 2 smaller ones on top, so it is very comfortable there. But not so much when I'm just working on my desk filling forms and reading papers. I'm actually getting low back pain. I wrote the seller to ask if there is any kind of adjustment I can make but it doesn't look to me like there is anything than can be done. I'm still keeping it.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Most comfortable office chair this fluffy guy has ever sat in.
Color: Black, Style: Classic
This chair is incredibly comfortable—easily the most comfortable one I’ve ever sat in. At around 300lbs, I’ve struggled to find a chair that’s both supportive and spacious. Most options feel tight, with the armrests pressing into my hips. Not this one. If anything, I feel small in it—there’s plenty of room on either side. It’s like going from a cramped budget airline seat to first class on a full-service carrier.
The lumbar support is the best I’ve ever used. The materials are top-notch—everything from the base to the legs to the casters is metal (feels like steel). The casters themselves use what look like inline skate wheels and glide effortlessly across carpet—almost too well on hard surfaces, so you might want to consider a rug. Not a flaw, just something to keep in mind.
I’ve paid twice as much for chairs that felt half as good, so in my opinion, this is an excellent value. The faux leather looks great and the stitching appears durable. While it may not last as long as real leather or high-quality fabric, it should hold up for a reasonable amount of time.
Tilt functionality is basic—just two settings: upright or slightly reclined. Honestly, that’s all I need. If you’re looking for something to nap in, this might not be the chair for you. But for office work or gaming, it absolutely delivers all-day comfort.
For reference, I’m 5'8", and the headrest aligns perfectly with the back of my head. If you're 6'5", it might end up being more of a neck rest.
And I have to give a special shoutout to the included T-shaped hex wrench. It may sound silly, but this alone earns it a 5-star review from me. Every other chair I’ve bought includes those awful angled hex wrenches that make you slam your knuckles into the frame with every turn—often accompanied by some colorful language. Sure, I have my own tools, but finding where my wife hid them isn't always easy. A good-quality tool in the box? That’s thoughtful and appreciated.
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Reviewed in the United States on June 19, 2025
★★★★★ 5
Wide and comfortable office chair
Color: Black, Style: Classic, Color: Black, Style: Classic
It's made of very fine leather and in good quality. It has a pump to pump air to the back of the chair, so I can adjust the softness of the chair back. It's a very wide chair. Maybe the widest one I ever bought. I can only sit half of its space. It's very easy to install, the alignments are perfect. Its arm and height is adjustable. The wheels are advance ones which make it move through the floor smoothly. It looks an advance chair if you want an upgraded experience.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Comfortable Seating
Color: Black, Style: Classic
I honestly didn’t expect this chair to be this comfortable, but it has exceeded my expectations in every way. I sit at my desk for long hours every day, and the adjustable air-pump lumbar support has been a total game changer. I love that I can fine-tune the firmness depending on how my back feels that day. My lower back pain has noticeably improved since switching to this chair.The seat is wide, thick, and very supportive without feeling stiff, which makes long work sessions much more comfortable. The armrests are another big plus—they adjust in so many directions that I can always find the perfect position for typing, reading, or relaxing. The chair feels extremely sturdy and well built, and it gives me confidence knowing it supports higher weight without wobbling.Assembly was straightforward and took about 20 minutes. Overall, this chair feels premium, comfortable, and thoughtfully designed. I would absolutely recommend it to anyone looking for a reliable, all-day office chair.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
Nice chair, w/ good cust support
Color: Black, Style: Classic
I apologize for length, but if I am doing a review for other people I assume you want to have as
much info as possible to make a decision. I feel this chair is for tall/fat/both so will review it as
such. At 6’4” @ 350lbs I fit into both, but reviewing based upon my body, yours is different so
adjust according.
TLDR – Would buy again, cavernous comfy chair with excellent customer support. Only
personal dings against chair are the back could be taller, but added back due to support.
Parts + Fit/Finish + Assembly:
The parts have some heft and feel solid as expected for a chair designed for heavy people.
Material and stitching look proper and I see no flaws. My box was beat to hell and ripped
opened at one point. Packing material took the hit and did its job as the items were unaffected.
The gas cylinder for the chair was missing and assume lost during shipping. (see customer
service). Assembly was standard office chair fare with simple and clear instructions.
Wheels / Height / Controls:
I normally wouldn’t think of mentioning wheels, but it’s different than expected. They are
good, maybe too good. A slight kick to push you back on wood floors sends you flying. The
height adjustment for me is good/standard. At full height my feet are flat on the floor and
where I would have the chair even if it went higher. My wife (5’6”) at that height is about 2.5
inches above the floor. Taller people than myself may wish for more height. Chair controls are
standard fare and operate smoothly
Seat:
It’s large and with the arms is there is nothing even close to your hip/legs. I can put my fist on
my hips and my arms barely touch the chair arms. This is why you are thinking of this chair, and
for that you will not be disappointed. The seat is not pillow soft and IMHO a little firmer than I
liked at first, but after a few days got broken in or I adjusted. I am a programmer + gamer so
spend a lot of time in the chair for hours on end. Comfortable and no complaints at all. Seat
depth for me is ~1” from my knee and good with roughly 20.5” usable butt/thigh length. That
should be fine for big/tall but may be a bit much for big/short. Measure your current chair and
decide from there.
Back:
The back lets the chair down a bit for me, the big/tall user, as the target seems to be big/short
users. The back ends just below my shoulder-line. That obviously means no leaning my head
back and the headrest is squarely on my shoulder blades. Not uncomfortable, but I’d prefer a
taller back. For me personally I’d like it to be extended 4”, but that would likely be an issue for
shorter users. I feel if the manufacturer increased the back by 2 inches it would be an ideal
compromise for all users. The chair has an inflatable lumbar support, which I did not use as I
personally find those uncomfortable. Also note the chair is designed for a more proper posture
with a 90deg back and not a more relaxed 100-110deg. Neither pro/con as personal
preference.
Arms:
The design of the arms being supported by rear only as mentioned earlier allow for an
abundance of hip/thigh space. This is an excellent ergonomic design with a potential caveat.
More stress will be placed upon the connection/joint. The joint for this chair is just shy of 4” so
seems beefy but only time will tell if it holds up to the lateral force of leaning on it while
reading. My chairs tend to last 5-7 years, due to the right arm feeling wobbly or the chair
leaning to the right. The arm adjustments provide a nice front/back of ~3”, from touching chair
back to 3” gap between chair/armrest. The height is similar and also moves the armrest
forward about another 2”. At full forward/up the armrest are higher than I like so should easily
accommodate taller users.
Customer Service
My chair was missing a part that I suspect was lost during shipping due to box condition. I
contacted them Sun (7/20/2025 @ 1201). At 2228 that night I received a response that they
acknowledged the issue and gave a tracking order for the missing part. The part arrived Mon
7/28 and gave a few days to test it out for review Fri (8/1). Obviously you don’t want an issue,
but if an issue arises how a company handles it tells you a lot IMHO on how they feel about
their product. I am very pleased with their handling of the matter.
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Reviewed in the United States on August 4, 2025