Fast metal drilling speeds for double tooth design. Easy plug removal for ejection spring. Raised shoulder helps to prevent the drill from breaking through the material when hole is complete. Thin-walled design optimum metal drilling efficiency. Sharper tooth geometry. Thick, hardened backing plate....

This item is DEWALT - Bi-Metal hole saws 1" Heavy-duty hole saw: 115-d180016 - 1" Deep cut Bi-Metal hole saw. Used for power tool accessories, drill bits & accessories. The product is manufactured in United states.