Diamond coated Grinding Drill Bits sets
Material : Alloy ,diamond
Shank Diameter : 6mm/ 1/4 inch
Total length: 2-3/8" (60mm)
Grit : 120 (medium)
Heads Shapes: Sphere, cylinder, bullet, taper
Can applied to hard material below:
1. sandstone and marble, granite, basalt, limestone, dolomite
2. floor tiles, glaze, underglaze, blue and white, pink ancient, wall tiles
3. Iron, aluminum, stainless steel
4. precious stone, metals

Package include:
20pcs x 120 grit Diamond Grinding Burrs

🔹🔹. Shank diameter: 1/4inch ( 6mm) , diamond mounted grinding head perfect for jade grinding, mold repairing, glass carving, cast cleaning, burr welding, polishing
🔹🔹. These Grinding drill bits fits most of electric machine,rotary drills, and grinders.
🔹🔹. 1/4 shank diamond burr great for grinding most of hard material ,such as iron ,glass, ceramics, tile, brick, fiberglass, stone, rock carbide, gold, platinum, silver, metals
🔹🔹. Sphere, cylinder, bullet, taper head shape helps do different work like drilling holes, grinding, graving,
🔹🔹. Good gift for DIY enthusiast hobbyist or craft fan, wear-resistant, maintain sharpness, not easy to fall off. (Note: use water for coolant, keep drill Smooth rotation)