Specification: Brand new Material: nylon + zinc-aluminum alloy Cutting depth: approx. 30mm Shaft diameter: approx. 8.5mm Product diameter: approx. 15.5cm Set contains: adjustable punch saw + three blades + positioning bit (use range 0.6cm) + hexagonal wrench Shaft length: approx. 25mm   Feature: Woodworking hole driller with adjustable multi diameters from 45mm to 130mm, makes it possible to cut holes of different diameters with just one tool. The three triple tooth blades saw through plasterboard and softwood boards with ease, and ensure fine and clean cuts with their special, straight-set toothing. Triple blade design, straight round effect, smooth cut, and burr-free. Used in woodworking opening, spotlight opening, plastic plate opening, DIY speaker opening, etc, but not for glass and metal. 10mm available for all standard cordless drills. Suitable for a wide range of drywall materials. Easy to use. Durable in use.   Package Included: 1 set x Adjustable Punching Saw   Note: Please allow 0-1cm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia