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Description
wera 6004 joker xs self adjusting open end wrench 020099Many users want a universal tool for screw joint work that covers as wide an area of application as possible. It should be a single tool for multiple sizes, both metric and inch, that is capable of automatically adapting to different screw sizes. It should also grip the screw securely, not cause damage and allow high speed in work. Thanks to the continuously adjustable and parallel jaws, different individual sizes of open end wrenches can be replaced.
Many users want a universal tool for screw joint work that covers as wide an area of application as possible. It should be a single tool for multiple sizes, both metric and inch, that is capable of automatically adapting to different screw sizes.
It should also grip the screw securely, not cause damage and allow high speed in work. Thanks to the continuously adjustable and parallel jaws, different individual sizes of open-end wrenches can be replaced. The necessary size is self-adjusting by placing the tool on the screw or hexagonal nut continuously.
The integrated lever mechanism holds the screw or hexagon nut securely between the jaws of the jaws, significantly reducing the risk of slipping or damage. The ratchet function that this tool integrates allows for fast and uninterrupted work without having to constantly reposition the wrench.
The use of prismatic angles allows a recovery angle of only 30°. The single arm construction in combination with the ratchet function and prismatic angles makes it easy to work in tight and confined mounting spaces. The adjustable Joker 6004 is the ideal universal tool for work on screwed joints. Self-adjusting. With a strong grip. Serves as a ratchet.
CHARACTERISTICS
- Automatic and continuous gripping of hex screws and nuts
- During gripping action, the lever mechanism prevents slippage and damage
- Fast and continuous screwdriving work without having to interrupt it when repositioning the wrench thanks to the mechanical ratchet function
- A return angle of only 30º thanks to the positioning of the angular prisms inside the mouth
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
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Small and mighty. Good quality.
Color: M01 Black, Color: M01 Black
In the past few years we’ve started buying only whole bean coffee to use in our French press. Given a few blackouts this past winter we thought it might be a good idea to have a manual coffee grinder on hand (instead of having reserve grounds).
This compact grinder is good for a serving of two. It reminds me of a peppercorn mill and will fit 3 tablespoons of coffee beans.
Overall I’m pleased with this product and would purchase it again. However, in the future I would also consider a larger and more ergonomic mill as I usually make at least 4 cups (4 tablespoons) of coffee at a time. The top can also be a little tricky to remove.
PROS:
- Grind setting works well
- Quality feeling materials
- Relatively simple to operate
- Cost/value
CONS:
- May be too small for some
- Top may be challenging to remove (e.g. Those with arthritis or difficulty with fine motor movement)
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Reviewed in the United States on February 28, 2026
★★★★★ 4
Compact, Quiet, and Great for an Office Coffee Upgrade
Color: M01 Black, Color: M01 Black
I bought this to use with my AeroPress at work, and for the price, it’s been a solid addition. The ceramic conical burr delivers a noticeably better cup than the pre‑ground coffee in the breakroom, and it grinds two scoops in about 15–20 seconds. It’s quiet, compact, and easy to stash with the rest of my setup.
A few things to note:
• The body can be slippery, and it occasionally twists in my hand when it catches a bean. A wide rubber band around the body of the grinder fixed that issue however.
• Grind consistency is decent, not perfect. After three months I’ve found my sweet spot, but it’s not as uniform as my electric burr grinder at home — which is probably an unfair comparison. Expect small adjustments when switching beans as it can affect bitterness.
• I wish it could be taken apart for deeper cleaning; the included brush only reaches the underside of the burrs. Maybe that’s overkill, but I’m used to doing it with my home setup.
On the upside, it feels well‑built, works reliably, and the large handle knob is great for anyone with limited grip strength.
Overall: A dependable, travel‑friendly grinder that delivers good results for the price. I’m happy with it and would recommend it for office or on‑the‑go brewing.
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Reviewed in the United States on January 16, 2026
★★★★★ 5
Satisfying and convenient.
Color: M01 Black
I've been drinking powder coffee and drip coffee, and wanted a change. This thing is really satisfying to use (I love the crunch) and clean. It's really sturdy, I've dropped mine once or twice and it's still going. It's small, and easy to adjust, but I mostly just grind it medium. It's utilitarian, but still looks quite pretty. Looks just like the pictures.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
I use it everyday and love it
Color: M01 Black
I was worried when I first purchased my mini manual coffee grinder. I was afraid I would not be able to use it due to arthritis in my hands.
Well! No worries now. This little guys works great. It grinds fine to course and without undies stress on my hands.
Thank you for making such a great grinder for all us nomad folks who enjoy freshly ground coffee in our rigs.
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Reviewed in the United States on June 8, 2026
★★★★★ 3
Good for the price, but has its limits
Color: M01 Black
You get what you pay for. Grind consistency is decent, but even the lowest grain setting won't get you close to a true espresso grind — it still produces a coarser result than expected. It's fine if you're using a pressurized portafilter, but not ideal for a bottomless one. Worth considering only if you don't mind spending 15 minutes a day grinding your morning coffee. After a few months, I got tired of the manual process and now just buy pre-ground espresso from a local coffee roastery
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Reviewed in the United States on May 19, 2026