Using M35 containing cobalt high speed steel milling,vacuum heat treatment. The head is grinding blade,high hardness,when drilling the workpiece material,it has processing performance. Drill and baking processing,has a higher wear resistance and low friction coefficient. The 135&; double apex Angle give full play to the self-centering performance,without -existing sockets,finish your work more quickly and accurately. M35 containing cobalt high speed steel can enhance the heat resistance and prolong life, core thick structure can outside of bit cutting force,is the for processing of stainless steel thin plate drilling. Can be use such as hand electric drill,bench drill or drill, durable. Diameter : 10mm Material : M35 containing cobalt high speed steel Color : Yellow Package includes : 1 x HSS Cobalt Drill Bit Note:Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3 cm.