Features: Basketball board set is made of quality high-grade steel material,durable and exquisite workmanship. Easy to set up, can be installed on many standard backboards. Basketball rim Features a heavy duty steel frame, high durability. This basketball goal hoop set is perfect for both indoor play and outdoor recreation. Specifications: Main Material: Steel Type: 1#(hollowstyle for adult), 2# (solidstyle for adult ), 3#(spring style for adult ), 4#(quality spring style for adult),5#(hollowstyle for kids (optional) Dia: 450mm(1-4#),350mm(5#) Package Size: 450*450*80mm/17.72*17.72*3.15in(1-4#) 350*350*80mm/13.78*13.78*3.15in(5#) Package Weight: 2000g/4.41lb(1#), 5000g/11.02lb(2#), 5200g/11.46lb(3#,4#), 1400g/3.09lb(5#) Packing List: for adults set: 1*Basketball Hoop 1*basketball net 4*expansion screws 4*screws 1*air needle 1*pair of wristguard 1*pair of ankleguard for kids: 1*Basketball Hoop