Diamond Drill Bits MASO Coated Core Hole Saw Tools Hollow Cutter for Wet Drilling Tool Ceramic, Porcelain Tiles, Glass, Marble,Granite (28mm)

●Material- These diamond drill bits made of high-speed steel that is durable and have a long sevice life, red paints on the body of this bit to avoid getting rusty ●Center pilot drill is unnecessary and not included ●Great gift idea for any DIY lover working at Kitchen, Bathroom, Shower,bottle to dealing with Ceramic, Porcelain Tiles, Glass and Marble ●Diamond Coated Tools will work best if you use water to keep the tools cool. Please do NOT run dry ●The Glass drill bit suitable for all common electric drillers.