Diamond Step Drill Bit Set 20mm 35mm 50mm M10 Thread Hole Opener For Tile Concrete Marble Chamfer And Polish With Angle Grinder Three Sizes In One Tool No Hassle Quick Hole Enlargement Deburr And Finishing In Ceramic Tile Porcelain Stone

Diamond Step Drill Bit Set for Tile, Marble & Concrete
✔️ 3 sizes in 1 tool: 20mm, 35mm, and 50mm steps for quick holes

This diamond step drill bit set enlarges and chamfers holes in ceramic tile, porcelain, marble, and concrete. It’s ideal for bathrooms, kitchens, and workshops where clean, finished edges matter.

✅ Three sizes in one: 20mm, 35mm, 50mm steps
✅ Diamond-coated steel core for long-lasting sharpness
✅ Universal M10 thread fits most angle grinders directly (conversion rod included)
✅ Dry or wet cutting to minimize dust and extend bit life
✅ Progressive conical opening reduces chipping for clean finishes

💡 What is a diamond step drill bit set used for in tile and stone work? This handy tool makes openings clean and accurate in hard materials. - handy for enlarging holes in ceramic tile, porcelain, marble, and concrete - reduces edge chipping due to gradual conical opening - works with M10-thread angle grinders and includes a conversion rod for drills - supports dry or wet drilling to minimize dust and extend bit life