The Bahco 5-in-1 Switch Cabinet Master Key is suitable for all the usual technical shut-off systems. It has a varnished plastic body with a practical retaining clip and the key profiles are zinc die-cast for increased durability. The Master Key has 4 different keys, which are fitted on a double turning mechanism, allowing good positioning. In addition, the body houses a magnetic 5mm square and 1/4in bit holder, and a magnetic pocket for 1/4in bits in 7-8mm square profile. It has the following functions: 3 x Square: 5, 6 & 7-8mm. 1 x Triangular: 9mm. 1 x Two-way: 3-5mm.