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Description
Ronstan 100mm Single Core BlockProduct Description Ronstan 100mm Single Core Block Features High dynamic and static load capacity High load bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminium alloy cheek plates Central hub hole can be used as a becket take off or tie up point Also available in Series 45, 60 & 75 Universal head with full 3 axis articulation Head posts can be locked at 0 or 90
Product Description
Ronstan 100mm Single Core Block
Features
High dynamic and static load capacity
High load bearing system
Ball bearings to counteract side thrust loads
Class leading performance and sleek, contemporary styling
Durable aluminium alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Also available in Series 45, 60 & 75
Universal head with full 3-axis articulation
Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key
Alloy Rope/Wire sheave version also available
Central hub hole can be used as a becket take-off or tie-up point
Specifications:
Sheave Ø - 4 in. (100mm)
Max. Rope Ø - 3/4 in. (18mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/8 in. (10mm)
M.W.L. - 7150 lb. (3250 kg)
B. L. - 16500 lb. (7500 kg)
Weight - 31.8 oz. (900 g)
Applications:
Ideal for mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats to 16m (53ft).
General applications on larger yachts.
Materials:
Bearings: High compression strength, self-lubricating acetal
Head post: Grade 2205 stainless steel
Shackles: Grade 17-4PH stainless steel
Padeye: Grade 15-5PH stainless steel
Other fixtures: Grade 316 stainless steel
Shackle, post & hub: Grade 316 stainless steel.
Features
Specifications:
Sheave Ø - 4 in. (100mm)
Max. Rope Ø - 3/4 in. (18mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/8 in. (10mm)
M.W.L. - 7150 lb. (3250 kg)
B. L. - 16500 lb. (7500 kg)
Weight - 31.8 oz. (900 g)
Applications:
Materials:
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
4.1 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Decent, gets warm though
Size: 10 Ft (Type B with Clamp), Color: Black
Compact with a nice long power cord. However, it does get warm, which makes me nervous, seeing as it is clamped to a wooden table...
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Reviewed in the United States on January 23, 2026
★★★★★ 1
Desktop charging station is defective.
Size: 10 Ft (Type B with Clamp), Color: Black
This item was purchased less than 6 months ago and today it suddenly stopped working. A defective unit. Will not buy again.
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Reviewed in the United States on December 19, 2025
★★★★★ 5
good for small awkward places.
Size: 10 Ft (Type B with Clamp), Color: Black
Small and extremely versatile. Can be positioned many ways.
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Very useful
Color: Black
I’ve been using this room divider to separate my space from my daughter’s, and it has worked out really well. It provides just the right amount of privacy while still keeping the room feeling open and comfortable. The design is simple yet stylish, so it blends nicely with our decor. It’s also lightweight and easy to move when needed, which is a big plus. The material feels durable and well-made, not flimsy at all. Overall, it’s a practical and attractive solution for shared spaces, and I’m very happy with this purchase. I would definitely recommend it to others.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great Room Divider
Color: Black
This product is a great room divider that decent quality and worth the price tag. The look is sleek and fits seamlessly into any room without complaint. The assembly was easy to follow and the quality is long lasting. Not only that, I need it as my sons share a room and we’re looking for some privacy. The divider is able to extend across a decently large area really divide the room as it has 4 panels. Overall, this is a great product for its cost and if your looking for a room divider that’s not too costly, this is the pick.
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Reviewed in the United States on April 12, 2026