| Feature: 3.High quality, use.4.Great tools for making an accurate hole on various bowlder, agates, pearls, jade, etc.5.Use Tip:Light pressure, diamond tools are processed by grinding the workpiece, If use too muchstrength, flour is not easy to rule out, especially the small tools is also easy to damage.Warm reminder: Drill bit generally need to be drill slowly on the stone when start to drill, wait for the stone to open hole and then drill hard. Like hard stones, or ice types, miscellaneous stone, agate, etc., the punch needle may not be . If it is used on hard stone, it is recommended to add emulsified oil to lubricate the Drill bit.Specifications:Material: Diamond+SteelColor: SilverBrand | |