Apart from all my tools which I have built up over the many years of modelling, both hand and power tools which I use regularly, some on almost daily basis...............this little tool is probably one of my most useful and well used tools,,,,,,,,,,,,so much used, that I bought two of them, and had a 3rd given away free to me...........a mini tube/pipe cutter.
a simple thing...…...but so well used and irreplaceable.