Ronstan RF41310 – Series 40 AP Triple Block with Becket

The Ronstan RF41310 Series 40 Triple Block with Becket is a robust and versatile solution for high-load control systems on keelboats and performance yachts. With three low-friction acetal sheaves and an integrated becket for tie-off points or cascading line setups, this AP (All-Purpose) block delivers reliable performance in mainsheets, vangs, and halyard tackles.

Constructed with UV-resistant, glass-fibre reinforced nylon cheeks and a stainless steel frame, the RF41310 is built to handle the harsh conditions of offshore sailing while maintaining smooth and efficient rope handling.

Specifications:

• Product Code: RF41310

• Block Series: Series 40 All-Purpose (AP)

• Sheave Diameter: 40mm

• Number of Sheaves: 3 (triple)

• Becket: Yes – for tie-off or control line integration

• Max Rope Diameter: 10mm

• Sheave Type: Plain bearing acetal

• Cheek Material: Glass-fibre reinforced nylon

• Strap/Frame: Grade 316 stainless steel

• Maximum Working Load (M.W.L.): 750kg

• Breaking Load (B.L.): 1500kg

• Weight: Approx. 220g

Key Features:

• Triple sheave design for multi-part tackles

• Integrated becket for cascading or line returns

• Durable plain bearing sheaves – ideal for static or moderate dynamic loads

• Corrosion-resistant stainless steel strap

• Compact, lightweight construction for performance yachts

• Suitable for mainsheet systems, vangs, halyards, and control line tackles

Engineered for performance and durability, the Ronstan RF41310 Triple Block with Becket is an essential for sailors looking for strength and reliability in compact rigging hardware — available now at Barton Marine NZ.