The Britool BRIE194672B 'Expert' socket and bit 34 piece set is designed to meet the requirements of professionals, meeting all currently enforced ISO and DIN standards. The set comprises of: 13 x 1/4in Hex Sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13 & 14mm.3 x 1/4in Slotted Bits: 4, 5.5 & 6.5mm.3 x 1/4in Pozidriv Bits: PZ1, PZ2 & PZ3.6 x 1/4in Resis Torx Bits: TT10, TT15, TT20, TT25, TT30 & TT40mm.3 x 1/4in Hex Bits: 4, 5 & 6mm.2 x 1/4in Extensions: 50 & 100mm.1 x 1/4in Ratchet.1 x 1/4in Universal Joint, 1 x 1/4in Adaptor Bit.1 x 1/4in Bi-Material Screwdriver Handle. The Britool BRIE194672B set is supplied in a socket set case with metal clasps which also converts into a modular storage system for use in roller cabinets.