BQLZR 2MM Silver Extended Gems Diamond Drill Bits Bowlder Pearls Jewelry Agates Hole Coated Tip Pack of 10

High quality, use.Note: In use, a little patience is required. It doesn't pierce like a others drill (best to avoid using too much force so you don't break the casing). It penetrates well . The sides can even be used as burs Great tools for making an accurate hole on various bowlder, agates, pearls, jade, etc. Note:Light pressure, 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. this is a wet drilling product if u try to use dry its not going to last Perfect for the job on pearls and softer stones