SQ-C2.0-180 - 2.0 meter (6.56')The SQ C2. 0 180 is a 2. 0 meter (6. 56') 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 two 180 arcs that can be purchased separately for custom designs or arch ways (please call for details). Features: 2. 0m circle (6. 56') 12'' aluminum box truss 2'' O. D. main tube 2MM (. 08'') wall thickness 2 x 180 arcs