uxcell 2pcs 20mm Dia Arbor Hole Diamond Lapidary Trim Rock Slab Saw Cutters 110mmx0.2mm Product Name : Diamond Lapidary Saw Cutter;Material : Metal, Diamond Coated Color : Silver Tone;Outer Diameter : 110mm / 4" Arbor Hole Diameter : 20mm / 0.8";Thickness : 0.2mm / 0.008" Weight : 39g Package Content : 2 x Diamond Lapidary Saw Cutter