Ronstan RF51510 50mm fiddle block with becket Ronstan RF51510 50mm fiddle block with becket
Ronstan RF51510 50mm fiddle block with becket

Ronstan

Ronstan RF51510 50mm Fiddle Block with Becket | Series 50 Sailing Pulley

$145.00
Tax included.

The Ronstan RF51510 is a high-performance 50mm fiddle block with becket, designed for purchase systems where smooth operation, secure line termination, and durability are essential. Part of the trusted Ronstan Series 50, this block is ideal for vangs, outhauls, cunninghams, and trimming systems on dinghies, keelboats, and small yachts.

Featuring a UV-stable acetal sheave, 316 stainless steel cheeks, and an integrated becket, the RF51510 is built to handle medium loads while delivering precise, efficient control. The becket allows for easy line dead-ending in multi-part systems, making it a compact, powerful solution for tight rigging setups.

✅ Key Features

  • Ronstan RF51510 – 50mm fiddle block with integrated becket

  • Split sheave design for purchase and trimming systems

  • UV-resistant acetal sheaves for long-lasting smooth performance

  • 316 stainless steel cheeks for strength and corrosion protection

  • Becket provides tie-off point for line termination

  • Ideal for vang, outhaul, cunningham, and control lines

  • Durable, compact, and easy to install

  • Part of the Ronstan Series 50 block range

Ronstan RF51510 50mm Fiddle block Becket specifications:

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