Project Source 3.9-in Nickel Metal Ceiling Light Mount in the Ceiling Light Mounts department at Lowes.com
Commercial Electric 15 in. Orbit LED Brushed Nickel Flush Mount Ceiling Light 1600 Lumens Adjustable Color Temperatures Dimmable 564111110 - The Home Depot
DVECUE 4Pieces Light Fixture Mounting Bracket for Ceiling Pendant Light Crossbar Kit Sconce Mounting Plate with Screws - Amazon.com