General description Neilsen 9pc Impact Torx Bit Sockets Set is designed for use with impact wrenches, featuring a range of Torx sizes from T20 to T70. Made from durable chrome vanadium steel, these sockets are built to withstand heavy-duty applications. Technical specifications Material: Chrome Vanadium Steel Drive Size: 1/2" Torx Sizes: T20, T25, T30, T40, T45, T50, T55, T60, T70 Length: 75 mm Design: Includes groove and hole for retaining ball