Glass Hole Opener Ceramic Glass Emery Reaming Hardware Tool Drill Bit Set Suitable for Diamond Coating Marble Etc

Features: 1.Application-this hole opener is very suitable for drilling glass ceramic tile bottles brick jars glass fiber porcelain etc. 2.Super material-these drill bits are made of electroplated emery durable long life high quality good performance clean and accurate holes. 3.Smooth cutting-This hole opener can create high-precision smooth cutting without broken edges. Reducing the drilling speed low drilling pressure and increasing the use of water lubrication will greatly extend the life of the drill bit 4.When you use a diamond drill bit please use clean water to cool the drill bit otherwise the life of the product will be greatly shortened. 5.The product has a variety of sizes please choose the one that suits you. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3mm deviation due to manual measurement