![Ronstan Series 15 Ball Bearing Utility Block - Pivoting Lead Block [RF15174]](http://www.bulluna.com/cdn/shop/products/71025XL.jpg?v=1635971328&width=1080)
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Series 15 Ball Bearing Utility Block - Pivoting Lead Block
Features:
- Smallest and lightest ball bearing block available
- Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction
- Single loop head blocks include an O-ring to separate running line from head lashing or fixing
Featuring a 4-point fastening for load distribution and low profile. Can be mounted without disassembly.
Applications:
- Dinghy control lines
- Vangs, cunninghams and tweakers
- Shock cord tensioning systems
Materials:
- BB sheaves: UV stabilized acetal
- Ball bearings: Stainless steel
- Cheeks: Grade 316 stainless steel