Robust Bit-Check by Wera. Bit-Checks provide a quick overview of the tools available. Bits not needed are simply reinserted into the set and do not get lost. Simple transportation e.g. in the shirt pocket. Includes universal holder with ring magnet - which very securely holds even heavy screws - and Rapidaptor, which allows bits to be attached without any need to actuate the sleeve. Can be inserted in the power screwdriver or for use in the chuck of the electric drill. Multi-component Bit-Check that can be positioned upright for permanently secure bit storage.