Ships same day (M-F) if ordered by 2pm PST.
The coupler design for the connection is supposed to be fairly simple, and I imagine there's a handy tool that allows one to pull up on the collar while pulling the hose. I didn't have one of those. After wrestling with it under the sink for 1/2 hour, I gave up and pulled the entire faucet out. While I pulled the collar, my wife pulled the hose. It eventually came out. Once I got the old one out it was easy to put the new one in