Adjustable Hole Saw: This adjustable hole saw tool creates round holes with a diameter range of 1.8–5 inches. To adjust the size, simply loosen the three screws on the cutter head, rotate the dial to the desired setting, then tighten the screws securely. High-Quality Construction: Made from high-hardness metal for strength and durability. The kit includes: 1 turntable, 1 dial, 1 drill bit, 3 screws, 1 large wrench, 1 small wrench, and 6 cutter heads (including 3 spare cutter heads for extended use). Precision Engineering: The cutter head is crafted from high-quality hard alloy and heat-treated tungsten steel for enhanced sharpness, strength, and longevity. The stamped dial features clear, accurate, and wear-resistant markings. Easy Installation: Simply mount the drill bit, set the cutter head to the required size, and secure the screws. Connect to your electric drill and begin cutting. Adjustments require only loosening the screws—no need to swap out multiple molds. Versatile Application: Suitable for wood, gypsum board, aluminum-plastic board, plastic board, plywood, and similar materials. Quickly cuts clean, precise round holes in your chosen size. Color: As shown Material: Metal + Plastic Package Contents: 1 x Adjustable Hole Saw Tool Kit