851-4-BDC-Bi Torsion-Phillips-Insert-Bits-Diamond-Coated-PH2-x-50mm-Pack-5-Wera-05059532003-p-Wera-Bi Torsion-Diamond-Bits-have-a-significantly-extended-service-life-&-prevent-damaging-cam-out-Ideal-for-use-with-screws-into-high-resistant-materials-such-as-hardwoods-&-ABS-plastic-&-self-tapping-screws-p-p-Use-with-all-combi-&-drill-drivers-For-impact-tools-use-Impaktor-bits-Use-with-Wera-Bi Torsion-Rapidaptor-bit-holder-for-ultimate-service-life-p-Wera-05059532003-851-4-BDC