Serrated Hole Saw Tile Drill Bit, 20mm, 25mm, 30mm, 35mm, 40mm, 42mm, 45mm, 50mm, 55mm, 60mm

1. Serrated cutting edge for sharp cutting and fast drilling
2. Wider, thicker diamond grains with high particle density
3. Moderately sized teeth with brazed construction; suitable for dry drilling without water
4. Dual front and rear chip-ejection holes combined with a serrated cutting edge at the tip reduce cutting resistance, improve chip removal, and accelerate drilling
5. Suitable for drilling holes in materials such as stone slabs, marble, quartz, granite, and ceramic tiles
6. Hole diameters: approx. 20/25/30/35/40/42/45/50/55/60mm
7. Dimensions: Shank length approx. 10 mm, working depth approx. 30 mm, length approx. 6 mm, shank size M10