Hi, I'm listing our single basketball butler storage rack, It's clever patent pending design allows the single ball holder to clamp on any round pole 3" to 4.5" diameter. ( steel clamp included) Or another option, the rack will fit/attach perfectly on a standard 1.5" garage stud attached via screw. (Quality screw provided) Keep your basketball at the court & ready for action. Keeps ball secure even in windy conditions. Construction made of steel & painted powder coated satin black for a durable finish. Made in the USA. Also it has a lifetime warranty, from any defects. Shipping is a fixed .21 anywhere in the lower 48 states only at this time. & ship cost remains the same if additional units are purchased. Thank you.