Ronstan RF81 30mm Double Block – Loop Top Pulley for Sailing

The Ronstan RF81 Double Block (30mm) with loop top is a versatile, lightweight pulley designed for use on dinghies, catamarans, and small keelboats. Featuring dual 30mm acetal sheaves and stainless steel housing, it offers smooth, efficient rope handling with excellent durability in marine environments.

The loop top configuration allows for flexible mounting using rope, webbing, or lashing—ideal for applications where minimal hardware is preferred. Whether used for mainsheet systems, control lines, or halyard setups, the RF81 delivers reliable performance in a compact package.

Specifications:

Product Code: RF81

Sheave Diameter: 30mm

Max Rope Diameter: 8mm

Sheave Type: Acetal

Cheek Material: stainless steel

Top Style: Loop top (lashing or soft attachment)

M.W.L. (Maximum Working Load): 300kg

B.L. (Breaking Load): 600kg

Weight: Approx. 40g

Key Features:

Double 30mm sheaves for versatile line control

Lightweight yet strong reinforced construction

Smooth-running acetal sheaves reduce friction

Loop top design supports soft attachment for reduced weight and noise

Ideal for use on performance dinghies and small racing yachts

The Ronstan RF81 is an excellent choice for high-performance sailors who need lightweight, dependable pulley systems on deck. Available now from Barton Marine NZ.