Impaktor bit set contains the premium TriTorsion Bit Holder with optional Ringmagnet function to hold screws up to 10″ long. Also contains Impaktor Diamond anti cam-out screwdriver Pozidriv bits, complemented by additional sizes from the high quality Wera bit range. Stored in a slim, compact, and easy open case for tool security and easy bit selection. Specifically designed for cordless impact drivers, these bits are suitable for heavy duty work. Diamond-coated for anti cam-out. The TriTorsion system means that together the bit and holder have 3 torsion zones to absorb the stresses applied by constant use in heavy duty impact drivers. Due to the precision hardening processes, the life of the screwdriver bits are dramatically increased.