Crimp Ring Removal Tool, Use To Take Off Copper Crimp Rings In The Event Of A Mis-Installation, Cut The Pex Pipe As Near The End Of The Barbed Insert Fitting, Open The Tool To Its Fullest & Place The Stub End Of The Crimp Ring Removal Tool Into The Fitting, The Cutting Blade Should Be On The Outside Of The Fitting & Pex Pipe, Squeeze The Handles Together So The Cutting Blade Cuts Through The Pex Pipe, Remove Tool From Fitting & Peel Pex Pipe From Fitting, The Fitting Can Be Reused If Not Damaged.