Professional Quality, manufactured from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Packed in heavy gauge steel storage case with plastic insert. Manufactured to DIN 3120/ISO 1174, DIN 3122/ISO 3315, DIN 3123/ISO 3316 and DIN 3124/ISO 2725 Specifications Features and Benefits • 4 metric hexagon sockets11 metric bi-hexagon sockets3 accessoriesChrome vanadium steel hardened, tempered, chrome plated and polished for corrosion protection Contents 4 x Hexagon socket: 6, 7, 8, 9mm 11 x Bi-hexagon socket: 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 22mm 1 x Reversible ratchet with Quatrolit® soft grip handle 1 x Extension bar: 150mm 1 x Sliding 'T' bar