Termight Series 3/8in X 18in High Speed Steel Bellhanger Bit Wood/metal TerMight drill bit models are offered in a wide variety of sizes for a multitude of uses Crafted to cut through wood & metal with ease Tough enough to strike nails or other obstacles and keep on drilling! Expanded, 118 degree tip design for superior tip/shank contact Strength & Durability | Optimal length (18) for drilling behind walls & between studs