Available in 10 sizes (Diameter) ----- Our tile hole saw set has 10 PCS of different sizes 6mm, 8mm, 10mm, 14mm, 16mm, 18mm, 22mm, 35mm, 40mm, 50mm. Suitable for your different needs. Rustless Durable ----- The tile hole cutter Made of high tensile carbon steel with smooth nickel plated surface to prolong service life. The cutting piece at least six months to one year before grinding. Faster, cleaner and smoother cutting ----- High quality diamond coated diamond saw tip to improve cutting fast and precise for a clean, precise cut and a smooth cut without broken edges in seconds. Multi-Purpose-----Our diamond drill bit is suitable for drilling glass, slab bottles, jars of blocks, fiberglass porcelain ceramic, vitrified, brick and stone. (Especially for glass and tile) Note ----- Please keep the speed in 800-1000 per minute, keep adding water to keep the drill cool, strictly prohibit dry drilling. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin