Wera 05073980001 impaktor diamond bit holder and 9 piece impact bit set wera 05073980001 this bit check set from wera includes an impaktor diamond bit holder and 9 bits suitable for phillips pozidriv torx and hex screws these high strength bits are easily recognisable due to their black colour wera 05073980001 impaktor diamond bit holder and 9 piece impact bit set