Professional Fast Clean Cutting On Porcelain And Ceramic Tiles. Premium Grade Braze-Bonded Diamonds Will Cut The Hardest Of Materials. Leading-Edge Vacuum Brazing Technology Ensures Diamonds Stay Bonded For Extremely Long Life. Requires Only Minimal Water Cooling Not A Continuous Water Feed. Easy Start No Drill Guide Required. Core Waste Material Auto-Ejects Allowing Continuous Hole Cutting. Tri-Flat Shank For Excellent Performance On Cordless Drills.PTDFORDIRCORDTDM12