Comes in a set of (2) two. Left hand side and right hand side. Easy installation, no drilling into the car's roof required. Does not use any additional tracks or feet which gives this setup a stock look. Made out of black powder coated 3CR12 corrosion resistant steel. Extremely quiet as there is very little wind noise. These Foot Rails contain 1 opening to access a Front Runner under rack mount table (1 smaller prep table or 1 larger camp size table).