Series 20 Ball Bearing Block - Single - Cheek Rivet Mount Features: * Low friction * High static and dynamic load capacity * Lightweight * Suitable for screw or pop rivet mounting * 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 Ø: 20mm(3/4') Max. Rope Ø: 6mm(1/4') M.W.L.: 200kg(440lbs) B. L.: 550kg(1,210lbs) Weight: 17g(0.6oz)