Install with wrench, remove the old part at the base of the faucet, then install the new stem adapter. [Part number]: 970-0770 Stem Adapter. The set only compatible with long stem Secure Pfit Trims. [Easy to use]: The 970-0770 Stem Adapter is simply replace and compatible with shower or bathtub in a few minutes, eliminating the need for a professional plumber.
