Description of π PCS Premium Diamond Drill Bits Set
Hole saw diameters: 10mm(2/5"), 13mm(1/2"), 16mm(3/5"), 19mm(3/4"), 25mm(1"). Diamond core drill bits made of Steel and nickel coated, durable and have a long service life. Diamond coated tip maximizes drilling performance and retains a sharp cutting edge after multiple applications. This diamond coated core drill bit removes a complete circle from glass, marble, tiles, granite, ceramic tile bottles and no broken edges. Diamond drill bits tools suitable for Drilling Glass,Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone, etc. Warm notice: Please add lubricants or water frequently to avoid sparks while using these coated grit hole saw set, can also enhance the working life by doing this.