Feature: 1. Round Shank: Our hole saw bit kit is rapid punching, high speed, and round shank. Let you improve your work efficiency. 2. Applicable Materials: Our hole saw bit kit is widely used in tile, marble, granite, ceramic, glass, glass tile, etc. 3. Not Easy to Fall Off: The hole saw bit kit uses a brazing process, the emery is firmly set in the cutting part of the blade, not easy to fall off. 4. Easy to Install and Disassemble: This hole saw bit kit is very easy to install and disassemble, sturdy and durable, suitable for lithium powered drill and hand drill. 5. Light Weight: The overall weight of this hole saw bit kit is light and very portable, so you can take it with you when you need it. Specification: Item Type: Round Shank Hole Saw Bit Material: Stainless Steel, Emery Application: Widely Used in Glass, Tile, Marble, Glass Tile Basic Parameters Hole Opening Size: Approx. 4mm / 0.16in 5mm / 0.2in 6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 14mm / 0.55in 16mm / 0.63in 18mm / 0.71in 22mm / 0.87in 25mm / 0.98in 40mm / 1.57in 50mm / 1.97in. Package List: 12 x Round Shank Hole Saw Bit