Series 75 Ultimate Ratchet - SingleThe extruded hole design, in conjunction with the groove profile of the sheave, provides a more powerful grip than conventional designs - up to 20:1 holding power. Unrivaled low weight is achieved by the use of a Torlon; ratchet pawl, high grade machined alloy sheave and black Acetal hubs and bearings. On-Off switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for servicing or customization.Features:Unrivaled 20:1 holding powerDual sided On-Off switchAbility to operate On/Off switch under loadLow friction ball bearing systemLightweightCheek cut-outs for easy bearing maintenanceApplications:Mainsheet on powerful dinghies and skiffsSeries 60 mainsheet systems on sports boats using RF7 mainsheet swivel unitsControl line applications on larger yachtsSpinnaker sheets on sports boats and small keel boats (lateral lead blocks)Materials:Carbon black Acetal ball bearingsAnodised aluminium sheave and cheek platesTorlon; ratchet pawlGrade 316 stainless steel forged shackleSpecifications:Sheave Ø: 3"Max. Rope Ø: 1/2"Pin Ø: 9/32"M.W.L.: 930lbB. L.: 4400lbWeight: 5.7oz