Tomcat 20.5 StackingMANUFACTURERS INFOEquipped with steel spigot connections Main chords are 1.90” OD x 3/16” aluminum Diagonals are 1.5” OD x 1/8” aluminum Snap Braces provided Fabricated by certified welders. Available in 8ft & 4ft Sections - Black MANUFACTURERS LINK