Available in 10 Sizes (Diameter) ----- Our tile hole saw set has 10 PCS of different sizes 3mm.4mm.5mm.6mm.8mm.10mm.12mm. 18mm.32mm.50mm. Suitable for your different needs. Faster, Sharper & Smoother Cutting ----- High quality diamond coated diamond saw tip to improve fast and precise cutting for a clean and accurate cut and smooth cutting without broken edges in seconds. Multi-Purpose ----- Our diamond drill bit is suitable for drilling glass, slab bottles, block jars, fiberglass porcelain ceramic, vitrified, brick and stone. (Especially for glass and tile)