Ronstan RF51530 50mm Fiddle Becket Block with Cleat | Series 50 Sailing Pulley

The Ronstan RF51530 is a versatile 50mm fiddle block with integrated becket and cam cleat, offering compact and efficient line handling for multi-purchase systems. Ideal for vangs, outhauls, cunninghams, and other control line setups, this block combines strength, control, and convenience in one rugged package.

Part of the Ronstan Series 50, it features UV-resistant acetal sheaves for smooth operation, 316 stainless steel cheeks for marine-grade durability, and a cam cleat for quick line locking and adjustment on the go. Whether you’re racing or cruising, this block is built for sailors who demand performance and efficiency.

✅ Key Features

• Ronstan RF51530 – 50mm fiddle block with becket and cleat

• Split sheave layout for multi-part purchase systems

• Integrated cam cleat for secure, hands-free line control

• UV-resistant acetal sheaves for smooth, low-friction operation

• 316 stainless steel cheeks for strength and corrosion resistance

• Becket provides convenient tie-off for control lines

• Ideal for vang, outhaul, cunningham, and trimming setups

• Compact, lightweight, and race-ready

• Part of the Ronstan Series 50 range

Ronstan RF51530 50mm Fiddle Block Becket Cleat specifications:

• Sheave Diam. 55mm + 30mm
• Max. Rope Diam. 10mm
• Pin Diam. 3/16 in.
• Max. Working Load 1650 lb
• Breaking Load 3310 lb