Feature: 1. Good material quality, low resistance, high hardness, improve work efficiency.2. Triangular shank design makes the mount stronger and non-slip.3. The U-shaped spiral is smooth and flat, and the drilling is smoother.4. Strong toughness and wear resistance, can be installed in electric drills. Specifications: Black Color Material: Carbide Diameter: 6mm/8mm/10mm/12mm Quantity: 1pc Ensures smooth and accurate drilling in tiles, glass, brick wall, wood and so on. Package List: 1 x Drill Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.