Diamond Drill Bit, Hole Saw Drill Bits Tools Set for Glass/Tile/Ceramic/Marble/Porcelain Cutting, Hollow Core Drill Bits Cutter with Diamond Coating, Carbon Steel 8mm-50mm 10 PCS
Includes the following diameters 6mm, 8mm, 10mm, 12mm, 15mm, 16mm, 18mm,20mm, 22mm,30mm; Using laser marking, the size will meet most of your different needs.