The HOLDRITE #111-S is a Copper-Bonded™ and supports both 1/2" and 3/4" pipes. Designed to fit within a 3-1/2" wall. The #111-S positions water supplies for lavatories and other fixtures. Mount the #111-S to the vertical vent or waste pipe with the self-locking 4" stainless steel band using the isolating felt and solder your pipes to the bracket. The 1/2" notches provide 4", 6" or 8" centers, while the 3/4" notches provide 4" or 8" centers. When soldering, heat the pipe, not the bracket.