Description This portable basketball system from HooKung have an Action Grip height adjustment mechanism that adjusts from 6 to 7 feet high. It also includes a Slam-It Rim with an all-weather nylon net and a 3.5" diameter round steel pole. It allows you to play well in the courtyard when you can’t go out. So bring the arena to your home with a residential basketball system. Specification Adjustable height: min 1.79m(6ft). max 2.13m(7ft) Backboard size: 28’’X18’’X1.2’’ Base size: 29’’X 22’’X 5’’ Rim inner dia. :39cm Material: steel tube+PE backboard+PE base+steel rim Net Weight: 18lbs Net material?weather resistance nylon