Series 40 Ball Bearing Block - Single - Universal HeadSheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.Features:Low friction Acetal or Torlon® bearing systemLightweightCheek cut-outs for easy bearing maintenanceCaptive Lock™ universal headSlotted pin shackle eliminates fouled linesApplications:MainsheetHalyardVangSpinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')Materials:U.V. Stabilized Acetal sheavesAcetal ball bearingsImpact and U.V. resistant, fiber reinforced Nylon cheeksGrade 316 stainless steel load strap and head fittingSpecifications:Sheave Ø: 40mm(1-9/16")Max. Rope Ø: 10mm(7/16")Pin Ø: 5mm(3/16")M.W.L.: 350kg(770lbs)B. L.: 1,000kg(2,200lbs)Weight: 70g(2.5oz)