SHDIATOOL Dry Diamond Drill Bits Set 4pcs 1/4-Inch Tile Drill Core Bits and 1pc 1/4 Carbide Drill Bit Diamond Tip Drill Bit for Ceramic, Tile, Marble, Porcelain 6mm
Application: Diamond core bits are worked great for dry drilling holes through hard porcelain tile, ceramics,bathroom tile,granite & marble, masonry, concrete, glass, hard plastic
Durable & Efficient: Each dry diamond bit is embedded with wax that will melt during dry drilling to cool the cutting surface; Water can act as additional cooling to prolong the worklife of bit.The carbide drill cutter Can be positioned,The ideal diamond drill bit set!
Machine: They can be used with hand drills, bench drill etc,can be used with common drilling machines and cordless screwdrivers from many well-known brands