Ideal for assembly and servicing of small precision mechanisms associated with electrical, electronic, ignition and refrigeration work, these bi-hexagonal, 1/4" square drive sockets possess a robust, chrome vanadium steel construction. Boasting a unique double knurl feature that gives a high grip which is essential for a quick tool change when your hands are greasy or oily, a 12 point bi-hexagon side drive design that will give a higher torque than normal sockets and a fully chrome plated, mirror finish. Available in a range of metric sizes, each socket is aluminium-free and has a chamfered leading edge to ensure easy fastener location. Features and Benefits Double knurl design bolsters grip on the socket even when hands are grimy or oily 12 point bi-hexagon side drive is designed to allow for higher levels of torque to be applied Chrome plating offers additional protection against wear and tear Mirror finish repels dirt and makes it easier to clean the socket Chrome vanadium ste