C k universal switch key ck tools t4451 1 a multipurpose tool designed for use on the locking systems of electrical gas and water cupboards in industry and on technical equipment in buildings such as air conditioning stop valves mains consoles etc the compact design is light strong and convenient with an integral pocket clip comes complete with modulo size 2 screwdriver bit to fit the 6mm drive magnetic bit holder and drive screws commonly found in electrical equipment ck tools t4451 1