Description 10pcs Diamond Hole Saw Set Tile Ceramic Glass Porcelain Marble 8mm 50mm Hole Saw Drill Bit Specifications Material SteelSize 8mm 10mm 14mm 16mm 18mm 22mm 26mm 38mm 45mm 50mmHeight About 50mmQuantity 10pcs Features Can be used with a standard electric drill Always use lubrication water otherwise the diamond core drill will burn Materials and only needs water for lubrication This diamond coated core drill bit removes a complete circle from glass marble tiles granite ceramic or other Use note 1 Start your hole diagonally make a round trace and then hold drill straight 2 Always use lubrication water otherwise the diamond core drill will burn Package Included 1 Set x Diamond Hole Saw 10pcs Notice 1 Please allow 1 3mm error due tomanualmeasurement Pls make sure you do not mind before you bid 2 The color may have different as the difference display pls understand More Details