1.Carbide-tipped tools feature cutting edges of carbide for wear resistance and a steel shank for toughness.
2.Spear point carbide tip shape design for extreme drilling rough tile, ceramics, porcelains and glass, etc.
3.Nickel Plated for better surface finishing, high corrosion resistance and low friction.
4.Quick change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks.
5.Can not be used on hammer mode, for use with rotary drills only.
6.Best result with lower rpm and good cooling with water, vinegar and turpentine.