![Ronstan Series 15 Ball Bearing Utility Block – Single Block Loop Head [RF15101]](https://www.wildwaterangler.com/wp-content/uploads/2026/10/ronstan-series-15-ball-bearing-utility-block-single-block-loop-head-rf15101.webp)
Series 15 Ball Bearing Utility Block – Single Block, Loop Head
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
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
