EFFICIENT: The HSS Carbide Drill Bit Hole Saw cut faster and more accurately through all kinds of materials like metals and wood. HIGH-QUALITY: Made by HSS Carbide, the hardest and high-speed drill bit material. DESIGN: The HSS Drill bit design helps reduce the risk of bit walking and slippage as you work. Ideal for installing door hardware, locks, knobs in doors and cabinets, creating a pass-through for wiring, repairing fuel tanks, plumbing, concrete breaks, and more. WIDE USE: Perfect to use on metal, plastic, PVC, concrete, wood, ceramic, tile, fiberglass, and more. : PACKAGE INCLUDES :