Diamond Chamfer Stepped Cone Drill Bits for Ceramic Marble Granite

Diamond Chamfer Stepped Cone Drill Bits for Ceramic Marble Granite Precision-engineered drill bits designed specifically for hard stone and ceramic materials. The diamond-coated stepped cone design delivers controlled drilling with minimal chipping or cracking on delicate surfaces. Ideal for creating clean holes in ceramic tiles, marble countertops, and granite installations. The chamfered edges reduce stress concentration, while the graduated cone shape allows for smooth progression through dense materials. Perfect for both professional contractors and DIY enthusiasts working with natural stone and tile applications.