<b>Features:</b><br> --100% brand new and high quality.<br> --Can be used with a standard electric drill.<br> --Always use lubrication (water), otherwise the diamond core drill will burn.<br> --Materials and only needs water for lubrication.<br> --This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.<br> <br> <b>Specifications:</b><br> Size: 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47",<br> 14mm/0.55", 16mm/0.62", 18mm/0.7", 22mm/0.86",<br> 26mm/1.02", 32mm/1.26"<br> Material: Steel<br> <br> <b>Use note:</b><br> Start your hole diagonally, make a round trace and then hold drill straight.<br> <br> <b>Package includes:</b><br> 10 x Diamond Holes Saw Drill Bits<br>