Adjustable Stay Brackets XC For building connections or stays of optional length and angle.,Will connect to all XC beam sides, or 44 mm square beam ends which accept M8 threads.,Each bracket requires two M8 x 12 screws see stock no. 527-482, and two M8T-slot nuts see stock no. 331-4289 for fixing beam sides, or 2 off M8 x 25 screws see stock no. 527-511 for fixing beams to ends.