Series 50 Ball Bearing Block - Single Loop TopSheaves 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.Features: id='isPasted'>Low friction, 2-stage ball bearing systemHigh static and dynamic load capacityLightweightCheek cut-outs for easy bearing maintenanceSpecifications: id='isPasted'>Max. Rope diameter (in): 1/2"M.W.L. (lb): 1100lbsSheave diameter (in): 2"B.L. (lb): 3310lbsWeight (oz): 3.4ozMaterials:Acetal ball bearingsUV-stabilized acetal sheaveGrade 316 stainless steel load strap and head fittingImpact and UV-resistant, fiber-reinforced nylon cheeks