The Harken 40mm Fiddle Block with Camcleat is the replacement for the Topper or Topaz Lower Kicker Block. Carbo fiddle line features high-load ball bearings with fitted races for low-friction operation. This kicker block is attached to the mast by an eyestrap or webbing on the newer models (sold seperately). The block comes with a stainless steel shackle to connect.Also suitable for Topaz Kicker Block.SpecificationsSheave: 40mmLength: 115mmWeight: 125gMax line diameter: 6mmMax working load: 220kgBreaking load: 735kgDirect Replacement: Topper Kicker Block