10PCS Diamond Drill Bit Set - for Marble Tile & Stone Drilling - Hole Opener Kit withFit Electric Drills - Wet/Dry Masonry Drilling Tools

Product Name: Serrated Dry Drill Bit Package

Production process: Brazing process

Material: Diamond 

Shank diameter: 3/8"-9.55MM

Quantity: 10 Pieces

Size: 6+10+12+20+25+30+35+40+45+50MM

Applicable models: Electric drills, Cordless drills, Table drills

Application scope: Suitable for opening and reaming of rock slab, marble, quartz stone, granite, ceramic tile, glass tile and other materials

Features:

1.Selected high-density and widened emery, firmly set, sharp and wear-resistant

2. Serrated cutter head, sharp teeth, fast drilling, opening holes flat, no chipping, long service life, improve work efficiency

3. Brazing process, dry drilling without adding water

4.Universal triangular shank, high-speed rotation is not easy to slip, clamping safety and stability

5. Front and rear double chip removal hole design, reduce cutting resistance, smoother punching