set of: two coated square bars, adjustable locking mounting brackets with key, and 4 pairs of saddles, and straps suitable for two boats. The roof bars are 50" long; the bars are supported by adjustable mounting brackets that fit onto the roof gutter, one slides the bars through the mounting brackets to the position that fits the particular car roof size. The 4 pairs of saddles enable one to carry two boats, or one can use two pairs for a single boat with room on the bars for something else like a bike. made by Thule: used but in good condition