Uxcell Diamond Tipped Tile Ceramic Glass Hole Saw Drill Bit, 30mm Product Name : Glass Hole Saw;Main Material : Metal Cutting Hole Diameter(Approx.) : 30mm/1.18'';Shank Hole Diameter : 4.2mm/0.17'' Shank Size (Approx.) : 8.2 x 24mm/0.3'' x 0.9'' (DiameterL);Total Length : 55mm/2.2'' Color : Silver Tone;Weight : 24g Package Content : 1 x Glass Hole Saw