LIFETIME PRODUCTS Lifetime In-Ground Basketball Hoop - Adjustable Height, Polycarbonate Backboard, Slam-It Rim, Outdoor Use, Easy AssemblySlam It Rim: 18 Inch rim and double horizontal springs provide great flexibility Action Grip height adjustment mechanism easily adjusts from 7. 5 to 10 feet with one hand In Ground Base: cements into ground Shatterproof Fusion Backboard: Integrates a shatterproof polycarbonate playing surface with an unbreakable polyethylene frame for a durable, pro glass look Graphics are screen printed with UV protected inks for superior color and protection against