Features and Benefits: Patented bit holding system forces bit surface to opposing side for maximum bit retention - strength; Packaged in patented impact resistant "slide rail" system; Heat treated socket bases for durability and service ability; Chrome sockets; S2 and alloy steel bits; Includes T8, T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, T55, and T60 Torxr Press Fit Sockets; 13-Piece Torxr Press Fit Set (1/4 in., 3/8 in. & 1/2 in. Dr.) includes:T8, T10, T15, T20, T25, T27,T30, T40, T45, T47, T50, T55, & T60 Torxr Press Fit Sockets packaged on a clip rail