Ronstan RF20302 20mm Triple Pulley Block | Ball Bearing Series 20

The Ronstan RF20302 is a high-performance 20mm triple pulley block, built for multi-line control systems on dinghies, keelboats, and small race boats. Featuring three ball bearing sheaves, this Series 20 block delivers ultra-smooth operation and low friction, making it ideal for vangs, mainsheet systems, cunninghams, and more.

Crafted with UV-resistant acetal sheaves and 316 stainless steel cheeks, the RF20302 ensures long-term durability and resistance to marine corrosion. Its compact design is suited for high-load, space-sensitive rigging environments where control, efficiency, and dependability are key.

✅ Key Features

• Ronstan RF20302 – Series 20 triple block

• Three 20mm ball bearing sheaves for smooth line handling

• Compact and efficient layout for complex rigging systems

• UV-stabilised acetal sheaves

• 316 stainless steel cheeks for strength and corrosion resistance

• Ideal for mainsheet setups, cunninghams, vangs, and control lines

• Lightweight and suited to dinghies and performance sailboats

• Race-ready durability and control

Ronstan RF20302 Triple ball bearing pulley 20mm specifications:

• Sheave Ø 20 mm
• Max. Rope Ø 6 mm
• Pin Ø 4.0 mm
• M.W.L. 400 kg
• B. L. 850 kg
• Weight 62 g