Various Adjustable Diameters: This woodworking hole driller with adjustable multi diameters from 45mm to 130mm, makes it possible to cut holes of different diameters with just one tool, saving money and space. Fine & Clean Cuts: The three triple tooth blades saw through plasterboard and softwood boards with ease, and fine and clean cuts with their special, straight-set too thing. Triple blade design, straight round effect, cut, and burr-free. Easy To Use: No complex instructions for use. The infinitely adjustable in just three steps:Loosen;Adjust Simultaneously;Fasten. Compatible Tools: Power Drill, Cordless Screwdriver Cutting Depth: 30mm Shaft Diameter: 8.5mm Shaft Length: 25mm Widely used in woodworking opening, spotlight opening, plastic plate opening, DIY speaker opening, etc, but not for glass and metal. Compatible Tools The hole saw is 10mm acceptable for all standard power drills and cordless screwdrivers. Attention:The cordless screwdriver is only suitable for drilling on gypsum plasterboard, while the power drill can be used on gypsum plasterboard, OSB panel, softwood, plywood and more. Fine and clean cuts Reliable Dust Extraction One product for diameters The all-rounder for commercial and domestic works Three integrated scales for all standard dimensions Infinitely adjustable in just three steps 10mm available for all standard cordless drills Suitable for a wide range of drywall materials Colour:Photo Color Material:Metal Package Contents: 1 x Punching Saw Tool (Due to different production batches, the color of the rotor is random, and the designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.