Wera 840/1 IMP DC SB Impaktor Hex-Plus Socket Screw 4 x 25mm Bit Carded 05073904001 Supplied on card, this 840/1 4 x 25mm Impaktor Hex-Plus Socket Screw Bit is part of Wera\'s \'Take It Easy\' colour coded tool finder system, making it quick and easy to find whilst you work. Wera\'s Impaktor range is designed to give you an above-average surface life. These bits have a specially designed geometry that prepares it for the most demanding applications, and the tip is coated in diamond particles to preven it slipping out of the screw head.  Hexagon socket screws only allow for narrow surface contact with tools, which can end up causing damage to the screw and a rounded out recess when driving. Wera\'s Hex-Plus tools prevent this, driving from the flats of the recess rather than the corners - and they fit in every standard hexagon socket screw. FEATURES High quality Impaktor bit for hexagon socket head screws The Impaktor technology offers an above-average service life, even under extreme demands Enhanced friction resistance thanks to the rough diamond-particle coating on the bit tip, which prevents any slipping out of the screw head Hex-Plus ensures a greater contact surface in the head of the screw, reducing notching effect and damage to the screw head 1/4\" hexagon - suitable for holders as per DIN ISO 1173-D 6.3 Particularly suitable for use with customary impact drivers Torsion zone is specially designed to absorb force and protect the bit tip SPECIFICATION Packaging: Carded Pack Quantity: x1 Pc Part Number: 05073904001 Bit Type: Hex-Plus Bit Length: 25mm