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Description
Ronstan Series 40 All Purpose Single Cheek BlockProduct Description Ronstan Series 40 All Purpose Single Cheek Block Features Exceptionally high working loads Low maintenance, long service life Self lubricating sheave Sheave 1 9 16 in. Max. Rope 1 2 in. Max. Cable in Pin in. M. W. L. 880 lb. B. L. 2200 lb. Weight 2. 3 oz. Product Information All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well
Product Description
Ronstan Series 40 All Purpose Single Cheek Block
Features
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Sheave Ø - 1 9/16 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 880 lb.
B. L. - 2200 lb.
Weight - 2.3 oz.
Product Information
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organizers.
Applications
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Alloy cheek plates
Features
Sheave Ø - 1 9/16 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 880 lb.
B. L. - 2200 lb.
Weight - 2.3 oz.
Product Information
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organizers.
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
4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Fits well and was true to the image!
Size: 3X-Large, Color: Black Royal Blue
This was a gift for a friend for our 50th High School Reunion. It wears well, the sizing is accurate and the embroidery is well done without loose threads.
He was the hit of the party!
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Reviewed in the United States on December 4, 2025
★★★★★ 4
Nice looking! Slightly slimmer fit.
Size: X-Large, Color: Navy Blue
Nice quality western shirt. Ran slightly slimmer than other shirt bought for western event.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2025
★★★★★ 5
Better than expected!
Size: XX-Large, Color: Black Coffee, Size: XX-Large, Color: Black Coffee
Even nicer in person! I was worried about the fit after reviews but true to size. Packaged well and arrived very quickly!
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great shirt, will order another
Size: Large, Color: Navy Blue
My husband is tall and thin, we never find shirts with sleaves long enough where he is not swimming in the shirt. The size large fit well both sleave and body.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Perfect Shirt
Size: Large, Color: Black Coffee
Perfect size, color and appropriate for the country event.
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Reviewed in the United States on May 28, 2026