We sell extension arms built to hold a backboard at a fixed height. These extension arms are designed to replace Lifetime, and Spalding entry level, portable or inground basketball systems. Raise your hoop and strengthen your game with the Basketball Pole and Extension Arm kits. These sturdy steel Pole lets you extend the height of your hoop to match your child's ever-changing size and reach. Designed for backboards up to 4 feet tall (backboard sold separately).