uxcell 45mm Dia Diamond Coated Marble Glass Hole Saws Cutter Pair Product Name : Hole Saw;Material : Metal Cutting Diameter : 45mm / 1.78";Shank Size : 8 x 20mm / 0.31" x 0.79" (D * L) Side Hole Size : 11 x 4mm/ 0.43" x 0.16";Total Length : 50mm / 2" Color : Silver Tone;Weight : 95g Package Content : 2 x Hole Saw