Golden Dry Diamond Drill Bits with box 

Specificiation:

Diamond Height: 15mm; Total Length: 75mm; M14 Thread

Diameter 20+27+35+55+68 Drill Bit+Diameter 20mm Diamond Finger Bit+3/8" Hexagon Shank

Application: 

Dry/wet drilling for porcelain tile, granite, marble, ceramic

Feature: 

1.Less Chipping, Minimizing breakage, less heat generation, Better finish quality
2.Vacuum Brazed technology provides longer working life, Fast and smooth drilling
3.High diamond exposure rate provides a faster and more aggressive drilling
4. Vacuum Brazed technology provide much longer working life than electroplated ones (Generally 3-5times),Save your money and time....
5.Having less loss of material