The Sure Shot U Just unit is an extremely popular portable unit for home and school use. Two U shaped bolts attach the board and ring to the pole these can be adjusted allowing the ring to be set at any height.U Just system allows for any height adjustment up to official 10' (3.05m).18"" (45cm) steel ring and net.Compatible with 215 flex ring.Durable fan shaped polypropylene backboard measuring 44"" x 28"" (112 x 71cm).Heavy duty pole for strength and durability.Wheels for easy movement.Ballast requires 170kg dry sand or 95 litres of water.Size of box ; 47"" x 37"" x 10"" ( 119 x 95 x 25cm).Assembly instructions provided.Weight 40kg.