Harmonic Balancer Installation And Removal Kit; Roller Thrust Bearing; Black Oxide Finish; For GM LS and GM LT • Innovative tool makes installing and removing GM LS & LT harmonic balancers quick and easy without causing damage • The CNC-machined tool provides a large contact area to keep the harmonic balancer perpendicular with the centerline of the crankshaft for bind-free action. • Roller thrust bearing allows drive nut to rotate freely so the balancer is pressed on or pulled off smoothly and evenly • Compact storage case keeps tool and all attachments organized and rust free for years of dependable service • Black oxide finish