OEMTOOLS 27144  Harmonic Balancer Installer Set Includes: Jaw Screw, Jack Screw Nut, Pressure Bearing, 3/8 In. x 24 Bolt Thread Adapters: 12mm x 1.5, 14mm x 1.5, 16mm x 2.0, 7/16" x 20, 1/2" x 20, 9/16" x 18, 5/8" x 18, 3/4" x 16 Comes with two sets of color-coded adjustable sleeves for each expanding driver Comes in a sturdy molded plastic case