Plum Garden 10pc Diamond Tipped Drill Bit Set for Glass Tile Stone

Feature: Material: emery + high quality stainless steel Speed: 20000 rpm or more. Size: 0.8 / 1.0 / 1.2 / 1.5 / 1.8 / 2.0 / 2.5 / 3.0 / 3.5 / 4.0mm Package Includes: 10pcs Diamond Tipped Drill Bit Set Use: jade, metal, agate, jade, precious stones, pearls, pendants, pebbles can be used (different hardness of the material the effect is also different) Note: 1.Different material hardness, the effect is different. 2.When you operate the action to maintain a smooth, do not shake, it is recommended that the bench drill will be better.