Robust Bit Check From Wera. Bit Checks Provide A Quick Overview Of The Existing Tool. Bits That Are Not Needed Are Simply Put Back Into The Assortment and Do Not Get Lost. Easy To Transport In Your Shirt Pocket, For Example. The Impactor Technology Ensures Above-average Service Life Even Under Extreme Requirements. Increased Frictional Resistance Due To The Rough Diamond Particle Coating On The Bit Tip Prevents It From Slipping Out Of The Screw. Particularly Suitable For Use With Standard Impact Wrenches. Impactor Holder To Cushion Extreme Impulse Peaks. Special Torsion Effect Thanks To Double Torsion Spring. With Ring Magnet For Easy Holding Of Even Long and Heavy Screws, Also Ideal For Overhead Work. Particularly Suitable For Use With Standard Impact Wrenches. Magnet Can Be Pushed Back and Thus Switched Off.