![Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/1280x1280/products/28010/36331/71027XL__28552.1646191537.jpg?c=1 "Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202]")
![Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/28010/36331/71027XL__28552.1646191537.jpg?c=1 "Ronstan Series 15 Ball Bearing Utility Block - Double, Loop Head [RF15202]")
Series 15 Ball Bearing Utility Block - Double, 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
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![Ronstan Series 15 Ball Bearing Utility Block - Pivoting Lead Block [RF15174]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/28009/36330/71025XL__44935.1646191535.jpg?c=1 "Ronstan Series 15 Ball Bearing Utility Block - Pivoting Lead Block [RF15174]")
![Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/27972/36292/70616XL__76230.1646191251.jpg?c=1 "Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200]")
![Ronstan Series 30 Utility Ball Bearing Block - Single, Swivel Shackle Head [RF30100]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/28090/36446/72397XL__67793.1646192406.jpg?c=1 "Ronstan Series 30 Utility Ball Bearing Block - Single, Swivel Shackle Head [RF30100]")
![Ronstan Series 30 Utility Block - Single, Becket, Loop Head [RF681]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/28080/36436/72293XL__36741.1646192302.jpg?c=1 "Ronstan Series 30 Utility Block - Single, Becket, Loop Head [RF681]")
![Ronstan Series 20 Ball Bearing Block - Double - 2-Axis Shackle Head [RF20202]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/17564/21900/55139XL__27181.1638826582.jpg?c=1 "Ronstan Series 20 Ball Bearing Block - Double - 2-Axis Shackle Head [RF20202]")
![Ronstan Series 30 Ball Bearing Block - Single - Loop Top [RF30101]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/35703/48462/55171XL__78152.1694444445.jpg?c=1 "Ronstan Series 30 Ball Bearing Block - Single - Loop Top [RF30101]")
![Ronstan Series 30 Ball Bearing Orbit Block - Double [RF35202]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/27439/35468/55177XL__28231.1646182399.jpg?c=1 "Ronstan Series 30 Ball Bearing Orbit Block - Double [RF35202]")