13 Pc. Torx Bit Socket Set Patented bit holding system forces bit surface to opposing side for maximum bit retention - strength.Packaged in patented impact 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 Torx Press Fit Sockets 80723 No -