TOOGOO(R) 6mm 1/4" Diameter Ceramic Tile Glass Metal Hole Saw Diamond Core Drill Bit Product Name : Glass Hole Saw;Material : Metal Drilling Diameter : 6mm / 1/4";Shank Diameter : 5.5mm / 1/5" Total Length : 50mm / 2";Color : Silver Tone Net Weight : 5g Package Content : 1 x Glass Hole Saw