Description
Clamp-On Furling Line Stanchion Lead Block – 1″ Ball Bearing
Delrin™ ball bearing sheave allows for quick and easy furling line adjustment. Stainless steel cage and strap ensure durability.
Specifications:
- Stanchions 1″ (25mm) in diameter
- 1-7/16″ (37mm) Sheave Diameter
- Maximum 1/2″ (12mm) line size
- Safe Working Load = 1000 lbs (450kg)






![Ronstan Wire Block - Tubular Rivet Head w/Nylatron Sheave - 25mm (1") Sheave Diameter [RF418]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-wire-block-tubular-rivet-head-w-nylatron-sheave-25mm-1-sheave-diameter-r.webp)

![Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle [RF48500]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-40-orbit-bb-quin-block-w-swivel-shackle-rf48500.webp)
![Ronstan Kite Block - Black w /White Sheave (Pair) [RF13101-2]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-kite-block-black-w-white-sheave-pair-rf13101-2.webp)