(1): Additional mounting clip for E50 & E100 models. Note: Each E50 & E100 extinguisher is shipped with ONE clip in the package. Some customers wish to have the possibility to purchase additional clips for custom installs, secondary location mounting, and more. This option is for those customers wanting more clips than the one that comes with an E50 & E100. FEATURES Fits E50 & E100 extinguisher (not included) INCLUDES Single mounting clip (Additional mounting clip only. Element extinguisher sold separately & comes with one clip)