Use to support wire mesh cable tray from the ceiling with a single 3/8" threaded rod. Attach tray to the Center Support Bracket with two splice washers from the Splice Washer & Bolt Kit (P/N 34728-X01), or use fold-over tabs to secure the tray on all sizes, except the 4"W (100 mm) version. Used to support a single cable tray. Manufactured from steel; height and length vary, sold individually.