12-point bi-hex socket for fast, accurate location to the fastener. Precision cold-forged, hardened and tempered chrome vanadium steel. Fully polished and nickel chrome-plated for durable corrosion resistance. Chamfered ends and thin walls for positive location on fastener. Knurled band for grip. Contents: 6, 7, 8, 10, 11, 12, 13 and 14mm. 12-point bi-hex socket for fast, accurate location to the fastener. Precision cold-forged, hardened and tempered chrome vanadium steel. Fully polished and nickel chrome-plated for durable corrosion resistance. Chamfered ends and thin walls for positive location on fastener. Knurled band for grip. Contents: 6, 7, 8, 10, 11, 12, 13 and 14mm.