Ronstan RF15100 15mm Single Swivel Pulley Block – Lightweight Marine Block

The Ronstan RF15100 15mm Single Swivel Head Pulley Block is one of the smallest and lightest ball bearing blocks available, designed for high-performance applications where weight and efficiency are critical. Featuring a precision-moulded acetal sheave running on stainless steel ball bearings, it delivers smooth, low-friction operation ideal for dinghy control lines, vangs, cunninghams, and shock cord tensioning systems.

Constructed with UV-stabilised acetal sheaves and grade 316 stainless steel cheeks, the RF15100 offers exceptional durability and corrosion resistance in harsh marine environments. The swivel shackle head allows for flexible alignment, reducing line twist and ensuring optimal performance.

• Sheave Diameter: 15mm

• Maximum Rope Diameter: 5mm

• Maximum Working Load: 120kg

• Breaking Load: 400kg

• Weight: 11g

• Materials: UV-stabilised acetal sheave, stainless steel ball bearings, grade 316 stainless steel cheeks

• Applications: Dinghy control lines, vangs, cunninghams, shock cord tensioning systems

Ideal for sailors seeking a compact, reliable block for precise sail control, the RF15100 is available now at Barton Marine NZ.