Pool Skimmer Arm - Aboveground and Inground Swimming Pool Skimmer The best way to Divert Leaves and Bugs into your Skimmer. The extended arm installs easily and securely into the opening of most any vinyl, fiberglass or gunite skimmer, with no tools required. The Skimmer Arm improves surface skimming by extending the reach of the skimmer opening up to 3 feet while guiding floating debris into the skimmer basket. The Skimmer Arm allows pool owners to choose desired direction and length, up to a maximum of 30 inches long. Lightweight, flexible and virtually indestructible.