Professional 13 pc METRIC MM HEX ALLEN WRENCH BIT SOCKET TOOL SET from J&R Quality Tools 1/4" Drive:2,2.5, 3, 4, 5, 5.5, 6mm x Length 37mm 3/8" Drive: 7,8,9,10,12mm x 48mm L 1/2" Drive: 14mm x 55mm L mirror chrome finish drop forged & steel heat treated S2 Bit Includes nice storage case.