Features Nylon + Zinc Aluminum Alloy Material: Adjustable hole saw is made of nylon and zinc aluminum alloy material, sturdy and durable, wear resistant, ensuring it can endure the rigors of repetitive use without significant wear. Adjustable Diameter: Circular punch saw has multiple adjustable diameters range of 45-130mm (approximately 1.77-5.12 inches) would be suitable for a variety of tasks where different-sized circular holes are needed. With Cutting Blades: Hole saw has three triple tooth blades, which can easily saw through plasterboard and softwood boards, and ensure fine and clean cuts with their special, straight saw tooth. Triple blade design ensures smooth cut, and burr-free. Easy To Use: Adjustable punching saw only needs to loosen the three screws in the middle, then adjust the diameter of the hole you want, and finally tighten the 3 screws to start drilling. Round holes of different sizes and diameters require only one drill bit. Wide Application: Adjustable punching saw has a cutting depth of up to 30mm, ideal for furniture repair and woodworking projects.Hole saw can cut a hole which in wood, plywood, plastic, drywall, soft plaster, cornhole boards, acrylic-board, thin metals , and etc. Specification: Item Type: Adjustable Punching Saw Material: Nylon + Zinc Aluminum Alloy Color: Silver + Black Cutting Depth: Approx. 30mm / 1.2in Shaft Diameter: Approx. 8.5mm / 0.3in Shaft Length: Approx. 25mm / 1in Adjustable Diameter: Approx. 45-130mm / 1.8-5.1in Application: Suitable for sawing solid board, compression board, gypsum board, plastic, etc. Suitable for home repair projects Package List: 2 x Adjustable Punch Saw 3 x Blades 1 x Positioning Bit (Use Range: 0.6cm / 0.24in) 2 x Hex Wrenches 4 x Screws Package List 2 x Adjustable Punch Saw 3 x Blades 1 x Positioning Bit (Use Range: 0.6cm / 0.24in) 2 x Hex Wrenches 4 x Screws