For rotary or percussion drilling Chrome vanadium steel shank with tungsten carbide/cobalt tip that is resharpenable and able to with stand drilling temperatures up to 1 900 degrees Fahrenheit; no center punch needed Use with cordless drills, corded drills, and drill presses in applications such as masonry 3/8 REDUCED SHANK Dia x OA Lgth In=1/2 x 6