Amazon.com: Ships Within 1 Biz Day from NV - Blue Boar Recessed Light Carbide Grit Hole Saw 6-3/8” Dia for 6 inch Lights: Fast Cutting in Drywall, Lath & Plaster, Hardi Board :
IDEAL 6-1/4-in to 10-3/8-in Carbide-Tipped Arbored Adjustable Recessed Lighting Hole Saw in the Hole Saws & Kits department at Lowes.com
Amazon.com: 6-3/8 Inch Hole Saw with Heavy Duty Arbor, 6 3/8”Recessed Lighting Hole Saw with 1-1/2 Inch Cutting Depth, Bi-Metal Hole Cutter for Smoothly Cutting Ceiling Tile Drywall Plywood Plaster Metal Plastic :
6 inch Hole Saw for Recessed Lights Carbide Drywall Plaster Ceiling Cement Block | eBay
DIABLO 6-3/8 in. Recessed Lighting Bi-Metal Hole Saw DHS6375RL - The Home Depot
Kobalt 6-3/8-in Carbide-Grit Arbored Recessed Lighting Hole Saw in the Hole Saws & Kits department at Lowes.com
Amazon.com: 6-3/8 Inch Hole Saw with Heavy Duty Arbor for Can Light Recessed Light, 1-1/2 Inch Cutting Depth HSS Bi-Metal Hole Cutter, Smoothly Cutting in Wood, Plastic, Drywall and Metal Sheet (6-3/8
Masterforce® 6-3/8" Recessed Light Hole Saw with 3/8" Arbor at Menards®
Kobalt 6-3/8-in Carbide-Grit Arbored Recessed Lighting Hole Saw in the Hole Saws & Kits department at Lowes.com