Diamond Coated 30mm Dia Glass Hole Saw Cutter Cutting Tool Silver Tone Product Name : Glass Hole Saw;Main Material : Metal Cutting Hole Diameter : 30mm / 0.8 ";Shank Size : 20 x 8mm / 0.8" x 0.3" (L*D) Total Length : 52mm / 2";Color : Silver Tone Weight : 30g Package Content : 1 x Glass Hole Saw