Hole Diameter: 60mm; Material: Metal, Diamond Particle, Diamond Coating maximizes performance and retains a sharper cutting edge than traditional carbide or bi-metal hole saws. This diamond coated core bit removes a full circle of glass, tiles, marble, granite. ,cer Hole Diameter: 60mm; Shank Diameter: 10 mm (3/8 inch); Total length : 55mm Nickel plating on these bits maximizes the life of your tools with great corrosion resistance. Side holes allow for easy threading and removal after drilling, perfect set for cutting precise holes in a wide variety of materials such as glass and ceramics. Specification: Hole Diameter: 60 mm (2-3/8 inch) Stem Diameter: 10mm (3/8) Overall length: 55mm (2-3/16) Quantity: 1 piece Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be some color difference, depending on the physical object received Delivery Quantity: (according to the main image)