Bi-hex metric socket set forged from chrome vanadium alloy steel for long life. The bi-hex sockets have a two-tone chrome finish to prevent peeling, whilst the ratchet features a soft grip, dual compound handle. CONTENTS. Bi-Hex Sockets: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 & 24mm. ACCESSORIES. 75mm Extension. 150mm Extension Driver. T Bar - 1/2" adaptor. Universal Joint. Adaptor. 45 Tooth quick release ratchet.