Used to remove & install the large 1-7/8" (left hand threaded) nut that holds the transmission pulley or transmission sprocket on the transmission mainshaft. Works with both belt & chain drive models. 1/2" drive. One-piece, no-welds narrow body to prevent mass and give maximum effectivity of air impact wrenches. Compatible with all 4 and 5 speed and most non-stock aftermarket 6-speed versions for these years.