These units are built to withstand the extra-heavy use of your playground * The goal and post bolt together, forming a single solid unit * Lifetime guaranteed silver aluminum or white powder coated backboard * System with 4 Feet Extension and Steel Net With Siliver Aluminum Backboard * Units include: One-piece, 4.5 in. O.D Galvanized steel post with a 4 Feet or 5 Feet backboard extension