![Ronstan Series 15 Ball Bearing Block – Triple [RF15302]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/ronstan-series-15-ball-bearing-block-triple-rf15302.webp)
Description
Series 15 Ball Bearing Block – TripleFeatures:
- 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
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