●High quality material , Safe and reliable.
●Scope of application: jade, metal, agate, emerald, gem, pearl, jewelry, etc. (different materials have different effects)
●Material: Diamond
●Tip diameter : 0.4mm - 3.0mm (According to your choice)
●Shank Diameter: 2.35mm
●Total length : Approx 40mm
●Grit:80#
●Note:
1.Use cold water during the drilling hole operation.
2.Use high-speed(Up 20000 RPM) to drill holes with our drill bits.
●*Manual measurement of data, subject to actual conditions.
●*Due to the light and screen difference, the item's colour may be slightly different from the pictures!