Neiko 10085A Tamperproof Torx Plus Bit Socket, 12 Piece Set | 5 Point Star, 8 IPR - 60 IPR | Cr-V & S2 Steel Made of premium S2 alloy steel for superior hardness that reduces wear-outs and ensures longevity High strength chrome vanadium steel sockets provide superior torque for greater turning power with mirror chrome finish for corrosion resistance Precisely made tips provide just the right torque to loosen hard to access nuts and bolts on European and Japanese cars Set includes a sturdy plastic organizing case for secure storage and easy carrying Set includes: 7 x 1/4" Drive: (8, 10, 15, 20, 25, 27, and 30 IPR), 4 x 3/8" Drive: (40, 45, 50, and 55 IPR), and 1 x 1/2" Drive: 60 IPR