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![Ronstan Series 20 Ball Bearing Block - Single [RF20100]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/55131XL.jpg?v=1643757639 "Ronstan Series 20 Ball Bearing Block - Single [RF20100]")
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Ships within 48 hours · Estimated delivery Jun 13 - Jun 18
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Description
Ronstan Series 20 Ball Bearing Block - Single [RF20100]Series 20 Ball Bearing Block Single Features: Low friction High static and dynamic load capacity Lightweight Precision molded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low friction Applications: Dinghy control lines Dinghy Vangs Cunninghams Traveller controls Materials: U. V. Stabilized Acetal sheaves Stainless steel ball bearings Grade 316 stainless steel load strap and head fitting Impact and UV
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
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4.2 ★★★★★
Based on 309 reviews
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Product Reviews
★★★★★ 5
Comfortable and good fit.
Size: Large, Color: Black
Nice and comfortable Under Armour socks. Great buy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
Socks
Size: Medium, Color: Beige/Cream/Green
These socks are great. Love them. Very warm too.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
good but pricey
Size: X-Large, Color: White / Steel - 100
good materials, size fits, very soft and durable but is a bit expensive
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Great socks great price
Size: Large, Color: Black
Great socks
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Really snug, but not uncomfortable
Size: Large, Color: Black
I don't know why these were so much tighter than all the other UA socks I've bought over the years. Not uncomfortable, just really tight when putting them on.
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Reviewed in the United States on April 14, 2026
