M1212 Socket Clip Rail Hex Set of 9 Metric 1/2in Drive This Teng Tools M1212 Socket Clip Rail Hex Set of 9 Metric 1/2-inch drive hexagon bit sockets are for internal heads. The bit sockets are manufactured from chrome vanadium steel for strength and durability and have a satin chrome finish. They are supplied on a clip rail, which is ideal for both wall mounting and for use in a toolbox. The set comprises the following bit socket sizes 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm and 17mm and 1 clip rail 220mm (8.2/3in) in length. Specification Weight 783g.