In this clip, we will be attaching the water supply line to the water tank from your water source in your house. You just want to make sure that you make it hand tight. You don't need a feral on this one. These are rubber washers and we are going to go ahead and fasten that right on there. Is this that tight or could you use a wrench. You can use a wrench on these. I am super carpenter so I don't need a wrench. I am going to show how you use pliers. Cut that off there an make that a little cleaner job now.