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Delrin® is a registered trademark of E
Ball-bearing sheaves minimize friction
Stainless steel straps and posts
The hardwood handle has been tested for durability in a marine environment and it is always a sustainable wood
with fast trim and release under high or low loads
RONSTAN 15mm Utility Double Block - Loop Head & Becket, RF15212 Sailboat Blocks & Hardware_16 mm Classic Cheek Block Delrin® is a registered trademarkThe Ronstan Series 15 Ball Bearing Double Block with Becket is a tiny, light, and versatile block with a 5 8" diameter sheave and a very high breaking load. Ronstan's Series 15 Ball Bearing Utility Blocks are the tiniest ball bearing blocks anywhere, running on sheaves only 5 8" (15 mm) in diameter. They're so light, strong, and inexpensive that you can use them in lots of creative applications, like shock cord retractors for your control lines,
