SQ-C7.0-45 - 7.0 meter (22.96')The SQ C7. 0 45 is a 7. 0 meter (22. 96') diameter 12'' box truss circle. It is made from the same high quality 6082 T6 aluminum as the rest of our 12'' truss for high strength and a low self weight. The circle is comprised of eight 45 arcs that can be purchased separately for custom designs or arch ways (please call for details). Features: 7. 0m circle (22. 96') 12'' aluminum box truss 2'' O. D. main tube 2MM (. 08'') wall thickness 8 x 45 arcs