Series 40 Ball Bearing Block - FiddleFeatures:Low friction Acetal or Torlon; bearing systemLightweightCheek cut-outs for easy bearing maintenanceCaptive Lock™ universal headSlotted pin shackle eliminates fouled linesLow friction, 2-stage ball bearing systemHigh static and dynamic load capacityLightweightCheek cut-outs for easy bearing maintenanceSheaves 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 requiredApplications:MainsheetHalyardVangSpinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)Typically used in direct 4:1 purchase systems such as mainsheets and boom vangsOn larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.Materials:Acetal ball bearingsUV stabilized Acetal sheaveGrade 316 stainless steel load strap and head fittingImpact and UV resistant, fiber reinforced Nylon cheeks