Bit-Check 7 TX BO Universal 1, 7 pieces 1x 894/4/1 K Universal Bit Holder: 1/4", x 51 mm 6x 867/1 Z TORX® BO bits with bore hole: TX 10x25 mm, TX 15x25 mm, TX 20x25 mm, TX 25x25 mm, TX 30x25 mm, TX 40x25 mmRobust 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 for the take-up of bits with hexagon head drive as per DIN ISO 1173-C 6.3. Quick-release chuck for rapid bit change. Comes with TORX® BO bits for secure fastening, for universal use.