Lifetime 90176 Portable Basketball System, 52 Inch Shatterproof Backboard 52" x 33" x 1" Polycarbonate Shatter Proof Backboard gives you the look and feel of the professional game! 18" Slam-It Rim is build with a 5/8-inch ring of solid steel, with 1/2" steel braces & double compression springs let you slam it like a pro Action Grip height adjustment mechanism easily adjusts from 7.5 to 10 feet with one hand All-weather resistant pole and net; Backed by a 5-year limited manufacturer warranty 35-Gallon Heavy Duty portable base provides stability and portability; Can be filled with water or sand