Description Description Set of drill bits intended for drilling in concrete, brick, and stone. Characteristic blade made of high quality tungsten carbide; deep volute for fast evacuation of bore dust during drilling; countersink angle 130o; practical plastic box. Technical data Application ceramic materials Hardness Rockwell [HRC] 88-89 Material CrV Quantity in package 6 Quantity in set [pcs] 5 Tip angle [st] 130
