The Bee Ball ZY-020 Backboard features a Flex ring for advanced basketball players and young aspiring basketball players. This set up can simply be attached to a wall using the pre drilled holes in the backboard, you can set this to the required height of the players. The large NBA style backboard is also ideal for new players as you can rebound shots off the backboard into the ring, the ring is a full size ring so will be suitable for all official size basketballs and training basketballs too. .