This product is recommended for cutting holes in glass, ceramic, porcelain, marble and granite. It has not been tested for drilling through hardened steel Tile Cutting Tools Diamond Core Drill Bits Set 8pcs Kit For Porcelain Tile... Tile Hole Saw HARFINGTON 5pcs Diamond Drill Bit Set 3/16 1/4 5/16 3/8 1/2 Hollow... LEKOESH Tile Hole Saw Kit - (6/6/8/20/35/50/75/100+20 Finger Bit... BRSCHNITT Diamond Drill Bit Set 1/4,5/16,1/2inch Tile Hole Saw and 4/5 Diamond Chamfer Bit for Porcelain Tile Ceramic Stone Granite Marble,Hex Shank The diamond drill bits adopts a circular design that is widely used such as angle grinder,hand drill, bench drill,Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick.
