For rotary or percussion drilling in masonry, ceramic, tile, concrete, brick, fiberglass, cast metals, wood, and glass. For use with Tapcon fasteners. 135 degree split point angle. Chrome vanadium steel shank. Tip is blend of tungsten carbide/cobalt. Black oxide finish. Withstands drill temperatures up to 1900 degrees. Resharpenable. Conforms to ANSI (American National Standards Institute) standards.