(Compatible with 1997-2023 Gen 3,4,5; ! NOT Compatible for 1992-1997 Gen 2 LT1 5.7 Engines). Easy to operate. Bring convenient to work. Much Safer. A necessary tool for working on engine. 【Usage】: Place the nut and washers on the crankshaft, then place the crankshaft pulley on the appropriate position of the engine, last tighten the nut.
