Features: 1.Fittment:Suitable for all Chevrolet GM LS & LT Series V8 Engines (1998-2021 V8 LS1 LSX LS3 Vortec 4.8L 5.3L 5.7L 6.0L 6.2L LQ4 L76 LT1 LT4 ) Also compatible with Engines that use a M16x2.0 threaded Crank Bolt. (Notes: Not work for LT1 Gen 2 Engines 1991-1997) 2.Material:Made of high quality heavy duty steel, durable, anti-rust and sturdy. Long service life. 3.Function:Help you easily complete the installation of LS Harmonic Balancer, saving time and effort.The installation tool is long enough to fully thread into your crank and still use a regular deep well socket to run it up . .