6 PCS/Kit 20-68mm Diamond Drill Core Bit Dry Hole Saw Cutter M14 Set For Marble

Drill Bit Quantity: 6 pieces? Carborundum Height:15 mm (0.59inch)? Drill Bits Diameter: 20/25/40/45/50/68 mm (0.79/1/1.6/1.77/2/2.7 inch)? 2 Diamond S...