Series 20 Ball Bearing Block - SingleFeatures:Low frictionHigh static and dynamic load capacityLightweightPrecision molded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance & low frictionApplications:Dinghy control linesDinghy VangsCunninghamsTraveller controlsMaterials:U.V. Stabilized Acetal sheavesStainless steel ball bearingsGrade 316 stainless steel load strap and head fittingImpact and UV resistant, fiber reinforced Nylon cheeksSpecifications:Sheave Ø:20mm(3/4")Max. Rope Ø:6mm(1/4")Pin Ø: 3mm(1/8").:250kg(550lbs)B. L.:550kg(1,210lbs)Weight:20g()