Cold hammer can attach to the USR (if you have a port in back for skin scrubber).  If you do not have that port select option with wall plug. 
 
The cold hammer is an innovative skincare tool designed to soothe inflamed, itchy, and sensitive skin through its cooling effects. By constricting the tissue and reducing blood flow to targeted areas, the cold hammer effectively diminishes redness and irritation. This tool is particularly beneficial for calming the skin after aesthetic treatments like Microdermabrasion, Dermaplaning, and MicroNeedling, which can sometimes leave the skin sensitive and inflamed. Its cooling sensation provides a refreshing experience, helping to restore comfort and balance to the skin, making it a valuable addition to post-treatment skincare routines.