Manufacturing process:Rolled, milled Point angle:130? Flute type:L,Screw Flute,VA flute,Triangle Flute etc Material:Body,45# CS,40Cr, Tip: YG8,YG8c,YG6 Finish:Chrome plated, Nickle plated, Zinc plated, Diameter:3-25mm Masonry drills we manufature are made of chromium steel (40Cr) or Carbon Steel( 45#CS) tipped with Tungsten Carbide (YG8,YG8C) and get good heat treatment as well as surface treatment.