This 37 Piece STANLEY(r) 1/4in Compact Socket Set. Designed for efficiency and productivity. The next generation sockets have a maxidrive profile, to maximize the contact between the socket and nut/bolt, and a dimension visible, to easily identify the socket dimension. Contains: 12 x 1/4in Sockets: 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm 3 x 1/4in Phillips Bits: PH1, PH2, PH3 3 x 1/4in Pozi Bits: PZ1, PZ2, PZ3 5 x 1/4in Hex Bits: 3, 4, 5, 6, 7 7 x 1/4in TORX Bits: T10, T15, T20, T25, T27, T30, T40 4 x 1/4in Slotted Bits: 4, 5, 6, 7 1 x 1/4in Bit Holder 1 x 1/4in 72T Bi Material Ratchet 1 x Compact Case.