uxcell 2 Pcs 10mm Dia Diamond Coated Drill Bit Marble Glass Hole Saw Cutter 52mm Long Product Name : Glass Hole Saw;Main Material : Metal Cutting Hole Diameter : 10mm / 0.39";Shank Hole Diameter : 3.7mm / 0.145" Shank Size (Approx.) : 20 x 6mm / 0.8" x 0.24" (L*D);Total Length : 52mm / 2.045" Color : Silver Tone;Weight : 15g Package Content : 2 x Glass Hole Saw