Two Pack Diamond Brazed Step Drill Bits Set Pro Grade M10 Thread for Angle Grinder and Electric Drill 3 Step Sizing 20mm 35mm 50mm Chamfer Bevel Holes in Marble Concrete Tile Stone Ceramics

Two-Pack Diamond Step Drill Bits with M10 Thread for Grinders
✔️ 3-step sizing: 20mm, 35mm, 50mm; M10 universal fit

These diamond-coated step drill bits are designed to drill, enlarge, and chamfer holes in hard materials like concrete, marble, tile, and stone. Use with angle grinders or electric drills for fast, clean results on ceramic and masonry surfaces.

✅ 3-step sizes included: 20mm, 35mm, 50mm hole sizes
✅ Diamond grit coating delivers sharp, long-lasting cuts
✅ M10 universal thread fits most 100mm grinders; includes adapter rod
✅ Wet and dry use for versatile performance on stone, tile, concrete
✅ One bit handles drilling, enlarging, chamfering, trimming, polishing

💡 What is a diamond coated step drill used for in handy projects? This handy tool lets you drill, enlarge, chamfer, and bevel holes through tough materials with a single bit. - Diamond grit enables fast cuts in concrete, tile, marble, and granite - M10 thread allows quick attachment to typical grinders and drills - 3-step sizes enable quick hole resizing without changing bits