To use these B-type channel brackets, simply connect them directly to Actobotics channels and hub mounts. They're ideal for attaching heavy-duty wheels and pulley assemblies to create offsets. When connecting, make sure to align the 0.5' center hole and follow the 0.77' and 1.5' mounting patterns. As for maintenance, keep them clean and free of dirt and debris. If they get wet, dry them thoroughly to prevent rust. When not in use, store them in a dry place. And always handle them with care to avoid any damage.