SQ-4133 90º 4-way CrossThe SQ 4133 is a 90 4 waycross box truss junction made from the same high strength 6082 T6 aluminum as the rest of our 12'' truss. 6082 aluminum alloy is gaining in popularity over the 6061 alloy that is often used in truss fabrication because it has a higher tensile (10% 18% stronger) and higher corrosion resistance due to a lower copper content. What does this mean for you? A superior product in both strength and finish while retaining the low cost