Diamond Step Drill Bits 20 35 50mm Set For Metal Tile Wood Concrete Marble And Engineered Stone Pro Grade Multi Hole Opener Cone Bit Grinder Cutter Beveling Chamfer Step Tapered Reamer And Multilayered Layer Bit For Precise Hole Expansion

Diamond Step Drill Bits Set 20/35/50mm for Holes
✔️ Three-diameter set (20/35/50mm) for fast, precise hole sizing

These diamond step drill bits are high-performance tools that drill, ream, chamfer, and polish holes in hard materials. They’re commonly used by metal workers, tile installers, and concrete pros to speed up hole work.

✅ Diameters: 20mm, 35mm, 50mm
✅ M10 thread interface for 100-type angle grinders
✅ Multilayer diamond coating on a robust metal matrix
✅ Combines drilling, hole expansion, chamfering, and polishing
✅ Suitable for ceramic tile, concrete, marble, engineered stone, quartzite

💡 What is a diamond step drill bit used for in masonry and metalworking? Diamond step drill bits are handy for drilling and enlarging holes in hard materials like concrete, tile, marble, and engineered stone. - They combine drilling, reaming, chamfering, and polishing in one pass for speed and precision. - The M10 threaded interface fits 100-type angle grinders for quick tool setup.