Ronstan RF20312 20mm Triple Pulley with Becket | Series 20 Block

The Ronstan RF20312 is a high-performance 20mm triple pulley block with becket, designed for advanced multi-line sailing systems on dinghies, keelboats, and performance yachts. Part of the Ronstan Series 20, it features three ball bearing sheaves for smooth, efficient operation and a tie-off becket for streamlined rigging.

Perfect for mainsheet systems, vangs, cunninghams, and fine-tune control lines, the RF20312 combines compact design with high-load capability. Its UV-resistant acetal sheaves and 316 stainless steel cheeks ensure long-term durability and reliability in harsh marine conditions.

✅ Key Features

• Ronstan RF20312 – Series 20 triple block with becket

• Triple 20mm ball bearing sheaves for low friction

• Becket for clean line termination or purchase setup

• UV-stable acetal sheaves for long-lasting use

• 316 stainless steel cheeks for corrosion resistance

• Ideal for vang, mainsheet, and cunningham systems

• Lightweight and race-ready for small boats

• Suited to high-performance sailing applications

Ronstan RF20312 Triple ball bearing pulley with Becket 20mm specifications:

• Sheave Ø 20mm
• Max. Rope Ø 6 mm
• Pin Ø 4.0 mm
• M.W.L. 400 kg
• B. L. 850 kg
• Weight 64 g