Vevor Hole Saw Kit, 18 Pcs Saw Blades, 6 Drill Bits, 1 Hex Wrench, General High Adaptability Quick-Change Arbor: Easily interchange arbor for quick-change chuck heads or standard three-jaw chucks. The 0.33"/8.5mm third arbor head fits most 3/8" chucks, making it compatible with common tools like hand drills, power screwdrivers, and drill presses. Rock-Solid 18-Piece Hole Saw Kit: Our hole saw set ensures durability and stability, even with prolonged use. With 18 different saw blade sizes, it tackles any diameter effortlessly, making your work a breeze. Universal Quick Installation: Assemble the hole saw in 4 simple steps to swiftly get to work. Plus, our mandrel also fits other brand's hole saws, making it super versatile. Cutting Made Easy: This metal hole saw kit is perfect for drilling holes in wood, plastic, iron, PVC, fiberglass, drywall, gypsum board, fiberboard, and composite materials. Enhanced Drilling Depth: Our bi-metal hole saw kit is designed for thick materials, cutting up to 1.5"/38mm depth. There is no need to avoid pre-existing iron nails and no need to align holes for pre-assembled pieces.