Looking for a Tool - Dont know the name in English

Hey folks. I was trying to look for a tool that makes a cut into tubing the same radius as the tube itself.. Im building the roof rack for our tear and I have a tube and or pipe bending tool however in order to splice into the tube it gives a rounded or diameter equal cut like tube itself.
Im lost in my words for it in English..I went looking for this tool cutter however I cant find anything like it..any name or photo or link would be of help.
I know that the tube can be welded to the other however it would be helpful and easier to do so if the tube is cut at the end to match the radius of that specified adjoining tubing..
Thank You ..
Im lost in my words for it in English..I went looking for this tool cutter however I cant find anything like it..any name or photo or link would be of help.

I know that the tube can be welded to the other however it would be helpful and easier to do so if the tube is cut at the end to match the radius of that specified adjoining tubing..
Thank You ..
