This 6 foot rectangular recycled plastic picnic table has a center post made of 6" square tube and the seat arms are made of 3 1/2" pipe. The seat and top supports are made of 2 3/8" pipe. This heavy-duty picnic table has 1/2" round head carriage bolts that hide the nuts making in vandal resistant. Recycled plastic picnic tables are popular in HOA communities and parks as they are easy to clean and maintain.