Sixrun focuses on discovering more home household products you want, providing more convenient lifestyle Specifications: Material: Metal with Diamond Coating Open Hole Size: 3mm/0.12in, 4mm/0.16in, 5mm/0.20in, 6mm/0.24in, 8mm/0.31in, 10mm/0.39in, 12mm/0.47in, 18mm/0.71in, 32mm/1.26in, 50mm/1.97in Total Length: Approx. 5cm/1.97in Quantity: 10pcs Weight: Approx. 154g Package Included: 10 * Diamond Coated Hole Saw Drill Bits Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.