This Wera 855/1 Impaktor Pozidriv Screwdriver Bits use a standard 1/4" hexagon drive and are specially designed to have an extended service life when used with impact drivers.

The bits have Wera's 'torsion zone' to absorb damaging peak torque loads to prevent premature wear and increase the service life of the bits, the bits are also diamond coated for extra grip, the bit grabs itself firmly into the screw head preventing the tip from slipping out during use. The coated tip also reduces the contact pressure required and enhances force transfer and so less effort is required, making it safer and easier to use. Each bit is colour coded with Wera's "Take It Easy" tool finder system on the shaft so you can quickly find the size and tip profile you need.

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