Harken 29mm Triple Swivel Carbo BlockDescription - Triple / swivelSheave dia. (in) - 1 1/8Length (in) - 2 7/8Weight w/shackle (oz) - 2.6Shackle pin dia. (in) - 3/16Max. line dia. (in) - 5/16Max. working load (lb) - 990Breaking load (lb) - 2000