Quality Diamond Coated Tipped Drill Bit 

Description:

-The diamond coated hole saw suitable for use in drill hole on Jewelry, Gems, glass, marble, tile or granite Please add some water when drill a hole.

-Size:Head Diameter x Working Length

-Head Diameter :0.8mm , 1mm , 1.2mm , 1.5mm , 1.8mm , 2mm , 2.5mm.

-Shank Diameter: 2.35mm

-Working Length: 12mm - 15mm

-7pcs Set 0.8mm - 2.5mm include: 0.8mm , 1mm , 1.2mm , 1.5mm , 1.8mm , 2mm , 2.5mm. One of each.

TIPS:

-Please allow a little error due to manual measurement.

-Use with water as a lubricant

-The operator must wear safety protective equipment to ensure safe operation

Package include: According to your choice.