This Diamond Drill is used to drill holes. It can be used on Glass, Marble, Granite, Fiberglass, Ceramic and Porcelain Tile. The end of this drill bit is grooved so the diamond coating has better adhesion for longer life, and the side hole allows water to lubricate the inside of the drill bit to insure an absolutely smooth and perfect hole.<!--Features --><p>FEATURES</p><UL class=p_f><LI>The end of this drill bit is grooved, so the diamond coating has better adhesion for longer life</LI><LI>The side hole allows water to lubricate inside of the drill bit to insure an absolutely smooth and perfect hole</LI><LI>This bit can be used on glass, marble, granite, fiberglass, ceramic and porcelain tile</LI></UL><!--Specifications --><p>Specifications</p><TABLE class=ke-zeroborder border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD width=131>Lenght</TD><TD width=365>2"(50mm) </TD></TR><TR><TD width=131>Chuck Size</TD><TD width=365>1/2"(12mm)</TD></TR><TR><TD width=131>Weight</TD><TD width=365>0.42 oz /12 g</TD></TR></TBODY></TABLE><!--Package Includes --><p>Package Includes</p><UL><LI>1 x Diamond Drill</LI></UL><!--Extra Info --><!--produts_compatibility -->