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 stainless sleeve, retaining ring and strong permanent magnet for the take-up of bits with 1/4" 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.Features and Benefits• Upright positionable Bit-Checks convince due to their functionality in a minimum of space• Universal holder with stainless sleeve, retaining ring and strong permanent magnet• Torsion design against premature wear• Tough viscous bits for universal use• In handy and robust Bit-CheckContents1x 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, PH 2x25, PH 3x25; 3x 855/1