Bit-Check 10 Universal 4, 10 pieces 1x 899/4/1 Universal Bit Holder: 1/4", x 50 mm 3x 851/1 TZ bits: PH 1x25 mm, PH 2x25 mm, PH 3x25 mm 3x 855/1 TZ bits: PZ 1x25 mm, PZ 2x25 mm, PZ 3x25 mm 3x 800/1 TZ bits: 0.8x5.5x25 mm, 1x5.5x25 mm, 1.2x6.5x25 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 with stainless sleeve, retaining ring and strong permanent magnet for the take-up of bits with hexagon head drive as per DIN ISO 1173-C 6.3. Can be inserted in the power screwdriver or for use in the chuck of the electric drill. Comes with Torsion bits to combat premature wear, tough viscous for universal use.