Features: and high quality Made of stainless steel, durable, waterproof, anti-corrosion and anti rust. Hole saw cuts smooth holes through wood, drywall, plaster and plastic. 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 space. Widely used in woodworking opening, spotlight opening, plastic plate opening, DIY speaker opening, etc, but not for glass and metal. It is a very practical toolset for carpenters, home decorators, contractors, professionals, and DIY homeowners for recessed lights, ceiling speakers, vent holes, and other hole cutting applications. Specifications: Material:Stainless Steel Cutting Depth: 30mm/1.18inches Shaft Diameter: 8.5mm/0.33inches Shaft Length: 25mm/0.98inches Diameter:15cm/5.91inches Package Includes: 1 x Adjustable Punching Saw Tool 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.