The brackets are just large soft wire(may be copper) wrapped around the 3/4" copper with two hooks that fit up under the lip of the shells. The hook farthest from the drain holes should be higher that the other to make the shell tilt toward the drain holes when it is hooked. The shell is held in position by its own weight. Shells can be positioned on the pipe by taking the weight of the shell off the bracket and sliding it where you want it.