9/16" Bi-Metal Hole Saw HSSE-Co8, 1-7/8" Depth, Teeth per Inch: 4/6, Xtreme Blu-Mol, Mfr#: 5855B$4.79+
1 3/4-inch (45 mm) Bi-Metal Hole Saw with Mandrel and Pilot Drill, Richelieu Hardware, Mfr#: 961051$13.49+
3 1/8-inch (79 mm) Bi-Metal Hole Saw with Mandrel and Pilot Drill, Richelieu Hardware, Mfr#: 962611$20.59+