Set of 10 diamond drill bits for ceramic, glass, porcelain, and tile - 8 mm to 50 mm

High-quality diamond drill bits with economical, fast cutting surface. Made of high-strength nickel-plated carbon steel, these drill bits are durable and precise. The tip of the head is coated with 80-grit diamond, which is uniform. This greatly increases drilling speed and results in cleaner cuts than other ordinary saws. This 10-piece set mainly used in various sizes contains the following diameters: 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, and 50mm. Laser marking ensures the sizes will meet most of your different needs. Application: Suitable for use in drilling holes in glass, marble, tile, glass blocks, fiberglass, porcelain and ceramic tiles, slate, granite, light stone, etc. It works with all electric drills and impact drills. Nice design: The center and side holes help to easily remove waste material; and the nickel-plated surface extends the life and improves the surface's corrosion resistance. Note: When cutting hard materials, it is important to ensure the drill bit is kept cool to avoid damaging the material being drilled and premature wear of the tool; water is necessary for lubrication during drilling, which can extend the life of the drill bit. Product characteristics: Material: steel Hole saw diameter: 8mm/0.8cm, 10mm/1cm, 12mm/1.2cm, 14mm/1.4cm, 16mm/1.6cm, 18mm/1.8cm, 20mm/2cm, 22mm/2.2cm, 25mm/2.5cm, 50mm/5cm. Application: Suitable for stone, tile, ceramic, glass, and granite processing. Good performance, long service life. Perfectly suited for creating clean, precise holes in glass and ceramic tiles.