Goalsetter All-Star In-Ground Height Adjustable Basketball System (5 -Inch) Internal Compression Height Adjustment Mechanism allows rim height to raise and lower 6' to 10' and increases hoop safety with no pinch or grab points Off-Set 5" square one-piece steel pole with seven-gauge (3/16") wall thickness minimizes shake and aids in reducing wear and tear on joints of the system and provides a 3ft Extension from wall to front of backboard Backboard is 36" x 54" and made of 3/8" acrylic mounted on an exclusive H-Frame design made of 1-1/2" structural steel tubing to provide precise and consistent ball response Corrosion-Resistant paint process of one primer coat and two coats of baked on acrylic-enamel provides a high-gloss finish Ground Anchor Hinge System is an exclusive Goalsetter design that enables easy installation of the goal system without the use of scaffold or ladders