11PCS/Set 6-35mm Round Shank Diamond Hole Saw Diamond Drill Bit Kit Brazed Drilling Bit for Granite Stone Marble Tile Cutter

20-35mm:10mm

20-35mm:#40/50

1.Vacuum brazing technology provides longer working life; 

2.Wet and dry, with comprehensive specifications and a wide range of applications, it can meet different needs; 

3.Using high-quality base steel and diamond, combined with scientific ratios to create a steady increase in efficiency; 

4.20MM and above 4 U groove design, conducive to debris and heat dissipation, better performance; 5.6-14MM plug cooling wax, play the role of cooling lubrication; 

6.Drilling fast and smooth, reduce debris, reduce breakage, neat and smooth; 

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