Review on Mgtgbao 2PC 5/8 Inch (16Mm) Dry Diamond Core Drill Bits, Vacuum Brazed Diamond Hole Saw Kit For Porcelain Ceramic Tile Granite Marble Stone Brick Glass With 5/8-11 Thread by Shaun Stapp

Solid all steel diamond core bit. For use in dry application to bore 3/4” hole thru slate, glass and marble to name a few. Coated inside and out with man made diamond abrasive chips allows for a quick and clean cut. Although able to be used in dry applications, lubrication in form of water, cutting oil etc. can be used to cut down on heat produced during drilling procedures and ensure long life of bit. You will need a 5/8 arbor in order to use this bit, not included.