Weight Loading Capacity: 4 shelves will hold up to 200 lb when mounted to wood or brick walls. Made of solid steel rod with powder coating, rustproof and provides strong support. Size: Rod measures 4 inches long with 0.39 inch diameter; backplate is 2.44 inches wide and 0.78 inches high. This 4-inch deep bracket fits shelves from 5" to 8" in depth. Sturdy Hidden Design: Brackets hide inside the shelf, creating a floating effect without ugly metal accessories ruining your home décor. Space-Saving Solution: Ideal for homes with limited space, perfect for kitchen, bathroom, bedroom, office and more. Great for organizing or decorative needs. Easy Installation: Drill a 0.39" diameter and 4" deep hole in your shelf, mount the bracket to the wall, then slide the shelf onto the bracket. Color: As shown in the picture. Package Includes: 2pcs floating shelf brackets