Installation For Models: 678-4373 l[ ¥ PLUMS Works 6" Shower Arm with Flange TOOLS NEEDED FOR INSTALLATION: Read instructions before installation Depending on your installation, you may require the following supplies: Ranch or pliers, steel wool, rags and thread seal tape. important Always protect parts with a heavy cloth when using wrench or pliers. (INSTALLATION: 1. Remove old flange, using screwdriver to carefully pry away from wall. 2. Remove oid amm by turning counter-clockwise with wrench. 3.