Flyshop 12mm 1/2" Diamond Tipped Metal Hole Saw Drill Bit for Ceramic Tile Glass 1-3 week to USA with track number, 2-5 week to other country Product Name : Glass Hole Saw;Brand Name:Flyshop Drilling Diameter : 12mm / 1/2";Shank Diameter : 6mm / 1/4" Total Length : 50mm / 1.96";Color : Silver Tone;Material : Metal Net Weight : 11g;Package Content : 1 x Glass Hole Saw