MetalHeavy duty mounting bracket: Standard 4 diameter x 1/8 thick light fixture mounting bracket made of high-quality galvanized steel ensuring sturdy performance durability and rust resistance. The heavy-duty bracket is rated to support up to 50 poundsIncludes everything needed for installation: Complete light fixture Universal mounting bracket kit includes crossbar bracket installation screws washers nuts grounding screws grounding wire and wire connectorsEasy installation: This universal round mounting bracket is designed with standard hole positions and multiple universal slots making installation effortless perfect for both DIY enthusiasts and professionals ensuring a hassle-free setup every timeUpgrade or replace outdated fixtures: This round universal light crossbar Securely connects light fixtures and canopies to electrical junction boxes. Perfect for retrofitting or replacing vintage or DIY fixtures with existing hardwareUsage scenarios: Compatible with most recessed and surface-mounted 'pan-style' electrical junction boxes ideal for wall sconces ceiling lights chandeliers pendant lights flush-mounted lights barn lights and bathroom vanity fixtures