1 7/8-inch (48 mm) Bi-Metal Hole Saw with Mandrel and Pilot Drill, Richelieu Hardware, Mfr#: 961131$15.99+
Quick-Change Carbide-Tipped Hole Cutter, 1-1/8" Stainless Steel Hole Saw with Tungsten Carbide Teeth, Greenlee, Mfr#: 645-1-1/8$35.39+