The must have tool on your workbench.
These will give you a no mess flush cut on plastic sprue gates up to about 1-1.5mm. Anything larger is best cut with a razor saw or larger flush cutting side cutters.
I bought a pair back at AMRM Liverpool around 2015, used more often than most,they are still as sharp and flush today.
Sprue end nipper for plastic kit sprues only.
These are for plastic kits only. I recommend cutting sprue gates no larger than about 1-1.5mm in diameter. Anything large may damage the cutter.