Titanium Micro-Carbide Diamond Ground. Fantastic in Granite, Marble, Stone, Concrete, Brick, Cast Stone, Soft Wood, Hard Wood, Ceramic Tile, Porcelain Baked Ceramic, Glass, Crystal, Plastics, Acrylics, Graphite, Cast Iron and even steel and stainless applications. Drills just about everything. Straight shank fits all drills and can be used with rotary and or percussion drills.
Award winning performance.
Due to how certain coatings are applied to these drill bits certain sizes are different in color but do not differ in performance