Wera Bit-Check 12 Metal 1 Bit Holder and Bit Set – 1/4″ Drive. 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 strong permanent magnet for the take-up of bits with 1/4″ hexagon head drive. 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.