Portable benches are 2 3/8 inch O.D. galvanized tube with 1 1/16 inch cross brace and portable leg style to allow for mobility. To guard against upending or tipping, end overhang is only 6 inch. These benches are perfect for indoor or outdoor use. Great for parks, locker rooms, ball diamonds, soccer fields, etc. These frame sets come with hardware for wood. The 6′ and 8′ benches come with two legs and the 15′ benches come with 3 legs.