Our Universalkeys impresses with its multi-functionality. Ideal for use in building and construction technology. The universalkeys are used for heating, plumbing, ventilation and air conditioning technology and, of course, for locking systems in electrical engineering .Usable for almost all locking Systems. Through its weight-optimised zinc die-cast construction, the Universalkeys are extremely light and compact.With one more optional tool „SI XPLUS Bit“ we´ll get 4 more options! SI-PLUS: Turning bit ( 2 Functions ) with magnetiv holder.SI-XPLUS: Turning Bit with halfmoon and 5mm inside square (4 Functions ).