Superwinch 7750A Pulley Block Superwinch Pulley Block is designed to double the pulling power of the vehicles winch up to 10,000 lbs. This pulley block facilitates to change the pulling direction without damaging the wire rope. It is custom designed to fit all winches. This pulley block lowers the Amp draw and heat buildup the vehicles winch. It is backed by 1 year warranty for defects in materials and workmanship. Technical Details - 20,000-lb capacity pulley block can double a winch's capability - Compatible with X9, S9000 and Husky winches http://www.bestbuyking.co.cc/Buy-Superwinch_7750A_Pulley_Block-B000C7LYSI.html