I am a newbie to the bike world and need some help. I need to change my freewheel cassette and noticed I needed a special tool. I searched on this forum for a post to direct me to the correct tool for my bike. I have a RadCity Step-thru 3 and I think this might be the tool I need

https://amzn.to/3Eb0ePh

But I want to be sure before I order. Thanks in advance.