uxcell 2 Pcs Diamond Drill Bits 13mm 33/64" Bottle Glass Tile Granite Hole Saw Product Name : Glass Hole Saw;Main Material : Metal Cutting Hole Diameter : 13mm/ 33/64";Shank Hole Diameter : 4mm/ 5/32" Shank Size (Approx.) : 7 x 20mm/ 0.27" x 0.78" (Diameter*L);Total Length : 51mm/ 2" Color : Silver Tone;Weight : 25g Package Content : 2 x Glass Hole Saw