TORX DRIVE BITS WITH 1/2" SOCKET ADAPTER, 15 PIECE MALE DRIVER SET Torx star drive bit set with 1/2" socket adapter.Includes T20,T25,T30,T40,T45,T50,T55 bits.Contains 7 bits of each size x 30mm long.Contains 7 bits of each size x 75mm long.Contains 1 x 1/2" square drive socket adapter.Supplied in a robust plastic case.