Overview Reviews Similar Products –> Product Description Series 20 Ball Bearing Block – Single 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 Applications: Dinghy control lines Dinghy Vangs Cunninghams Traveller controls Materials: U.V. Stabilized Acetal sheaves Stainless steel ball bearings Grade 316 stainless steel load strap and head fitting Impact and UV resistant, fiber reinforced Nylon cheeks Specifications: Sheave : 20mm(3/4″) Max. Rope : 6mm(1/4″) Pin : 3mm(1/8″) M.W.L.: 250kg(550lbs) B. L.: 550kg(1,210lbs) Weight: 20g(0.7oz) Product Videos Custom Field Product Reviews Write a Review Write a Review Ronstan Ronstan Series 20 Ball Bearing Block – Single Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *