Features: Engineered with high grade alloy steel and a rust resistant finish, this multifunctional punch tool set offer durability and longevity for all your drilling needs. Featuring a thickened diamond grit and brazing technology, ensuring efficient and wear resistant cutting performances. Suitable for enthusiasts and professionals alike, this tool kit is a must have for anyone looking to achieve precise and smooth drilling. Whether you're working on glass, ceramic tiles, marble, or vitrified bricks, this punch tool set comes with four different sizes to tackle various hole drilling tasks effortlessly. Enhance your toolkit's capabilities with this easy to use and portable punch set, designed to deliver reliability for your most demanding projects. Specifications: Component:Steel Total length: Approx.140mm/5.51inch Drilling depth: 60mm Borehole diameter: 33mm/53mm/63mm/73mm Package Includes: 1Pc Hole Saw Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.