Model air league hb10 junior basketball stand product overview the hb10 is a junior size basketball stand from air league the frame is made from durable all weather polyethylene and is built to last it is height adjustable up from 4ft all the up to 6ft the scratch resistant polyurethane base can be filled with 20kg of water for stability please note that this stand does not include any balls construction durable polyethylene frame and backboard the base is made from blow moulded polyur