Ronstan Series 20 Ball Bearing Block - Triple - Becket - 2-Axis Shackle Head – Marine Boat Replacement Part is organized for lighting & visibility shoppers who need a clear, professional marine parts buying experience.

Series 20 Ball Bearing Block - Triple - Becket - 2-Axis Shackle Head Features: Low friction High static and dynamic load capacity Lightweight Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction Two-Way head can be fixed at 0° or 90° Applications: Dinghy control lines Dinghy vangs Cunninghams Traveller controls Materials: Stainless steel ball bearings UV Stabilized Acetal sheave Grade 316 stainless steel load strap and head fitting Impact and UV resistant, fiber reinforced Nylon cheeks Specifications: Sheave Ø: 20mm(3/4") Max. Rope Ø: 6mm(1/4") PinØ: 4mm(5/32") M.W.L.: 400kg(880lbs) B. L.: 850kg(1,870lbs) Weight: 64g(2.3o

Fitment & Product Details

• Brand / Manufacturer: Ronstan
• Material: stainless steel, nylon

• Search-optimized by brand, system, part type, and fitment cues.
• Verify compatibility with your original part number, engine model, and application before ordering.
• Built for boat owners, e-commerce shoppers, and professional marine service teams.