10X Glass Drill Bit Set- Drill Bits Glass Extractor Remover Tool

length: about 2inch colour: silver Material: carbon steel size: 10x6x3cm Package Contents: 10 x Diamond Coated Drill Bit Attention: keep the speed within 800-1000 per low drill pressure and increased use of water lubrication will extend drill bit life. And keep adding water when the diamond drill bits are working on the glass or . Only the above package content other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.