Double Cantilever Arms have 8.0mm backplates and 2.5mm channel. Minimum yield stress is 275 N/mm². The finish is hot-dip galvanised with a 55 μm minimum coating. Slotted backplates allow alignment. Lengths are 450mm, 600mm, 750mm and 900mm, with DCA5 variant codes. Each code identifies the arm length.