This cuff is threaded on both ends to connect 1-1/4″  hoses together on a more permanent basis.  If a basic hose breaks, you can cut the bad part off and then use this to join the two parts back together.  Also, if you remodel and need extra length, you can use this to add another length of hose to it.  Keep in mind that the longer the hose the more reduction in performance.  If you just want to add extra length once in a while, you would probably want to use HC111BL.

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