Flyshop 12 Pcs 6mm Dia Diamond Coated Drill Bit Tile Ceramic Glass Hole Saws Product Name : Glass Hole Saw;Main Material : Metal, Diamond Cutting Hole Diameter : 6 mm / 0.24";Shank Hole Diameter : 3.5 mm / 0.14" Shank Size (Approx.) : 46 x 6 mm / 1.8" x 0.24" (L*D);Total Length : 50 mm / 2" Color : Silver Tone;Weight : 30g Package Content : 12 x Glass Hole Saws