Feature●【Fitment】: Compatible with all GM LS & LT Engines. (Fit for 1997-Current Gen 3,4,5; !!!NOT FIT FOR 1992-1997 Gen 2 LT1 5.7 Engines)●【Material】: Made of high quality steel. Durable, Rust-Proof and Corrosion-Resistant. Have a long time using.●【Usage】: Screw nut in the crankshaft and push the crankshaft pulley into place (tighten the nut). Notice: It will be more perfect to add lubricating oil when used.●【Advantage】: High quality. Easy to operate. Bring convience to work. Safer than pulling the balancer with bolts.●【Package】: 1x hexagon bolt, 1x high nut, 2x washers. Product Size Detail, please refer to third picture.Description