Metric Allen Keys - Long Arm

Six-sided fully hardened chrome vanadium wrenches for driving socket screws. Frequently used on machinery when securely fastening parts together and on domestic appliances and cycles. Faithfull keys from 4mm (5/32in) upwards have chamfered edges to prevent damage to fittings. Faithfull keys from 3mm (1/8in) upwards are marked with their size. Type: Long arm. Size: 2.5 mm. Length: 90 mm.