General description A set of standard 1/4" D Bi-Hex (12pt) sockets, from 4mm to 14mm, manufactured from chrome vanadium with a satin finish. Technical specifications Socket sizes: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, and 14mm Bi-Hex (12pt) x 25mm long Other information Supplied on a socket rail