Steelman PRO 78783 18-Piece Tamper Proof Hex Bit Set w/Diamond Tips (MM) Industrial grade diamond coating on tips provides additional torque and reduces cam out Heat treated steel for strength and durability Removes standard and tamper proof star fasteners 3/8-Inch hex drive Includes quick release adapters for 3/8-Inch square drive and 1/2-Inch square drive for use on impact wrenches Includes blow molded case for safe transport and storage