Specification: *Material: Carbide *Color as shown *Size: 3*70mm, 4*70mm, 5*76mm, 6*77mm, 8*80mm (Approx.) *Quantity: 5pcs Features: *100% brand new and high quality. *Using high-quality YG6X alloy as raw material. The oxynitriding process of the cutter head strengthens the hardness of the drill bit. *Fully polished and anti-rust treatment, clean and without burrs. The drill bit is more wear-resistant and more durable. *Automatic polishing: The polishing CNC is fully automated, and each one is unified. *The cutting resistance is small, it has the characteristics of stable drilling, fast speed and no edge breaking. The opening is neat, smooth, without broken edges, no tremor, and not easy to chip. *Professional glass and tile drill bits provide smooth and accurate drilling on tiles, marble, thin iron plates, mirrors and glass. Remember to add water or coolant when drilling. *5 different sizes to suit your different needs. Can be installed on general hand drills and bench drills. Package Contents: 5*Universal Drilling Tool Notes: 1. Due to various factors such as the brightness of the display and the brightness of the light, the actual color of the product may be slightly different from the picture on the website. 2. Please allow the data to have a slight deviation from manual measurement.