
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan Series 40 All Purpose Block - Single - CheekSeries 40 All Purpose Block Single Cheek 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
Series 40 All Purpose Block - Single - CheekAll 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.
Features:
- Exceptionally high working loads
- Low maintenance, long service life
- Self-lubricating sheave
- Mount with 3 x 5mm (3/16") fasteners (not supplied)
Applications:
- Mainsheet
- Halyard
- Vang
- Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
- U.V. stabilized Acetal sheaves
- Impact and U.V. resistant, fiber reinforced Nylon cheeks
- Grade 316 stainless steel bearing race
- Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 66g(2.3oz)
Manufacturer : Ronstan
Manufacturer Part No : RF41151
UPC : 9316800244331
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 86 reviews
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Product Reviews
★★★★★ 5
Great product
Item form: Tablet
Love these. Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2025
★★★★★ 1
Not good
Item form: Tablet
Terrible compared to packets. Almost no foam and inefficient
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
As listed
Item form: Tablet
Works as described.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
★★★★★ 5
Great Product for Hard Water
Style: Shampoo
We have hard water and just after a week of using this I can already tell a difference, not only that but I've been using it on my upper arms, shoulders and neck and my keratosis pilaris is clearing up and my skin is smooth. Great product, happy I found it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Excellent Hair Cair Products
Style: Shampoo
Terrific shampoo and conditioner. Better than products twice the price.
Deep cleanses hair gently. Smooths; has a lovely scent.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2025
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