Fully adjustable 16-gauge black steel extension arm design provides maximum rigidity and insures safety in play. Constructed with two 5' x 3-1/2" diameter upright poles and a 4' x 3-1/2" extension arm that will adjust goal height from 6' to 10'. Twin support braces mount directly to backboard and eliminates need for accessory brackets. Heavy-duty ground sleeve. Install 30" deep in concrete. Complete with mounting hardware and assembly instructions. Color litho carton, shippable by UPS. Supports up to a 52" backboard.