For those times when you have to add a solid to the valved NMR tube and you do not want to get a bunch of the solid powder where the valve seals. You need a small funnel to get the solid past the valve “line”. The one on the right is the first generation, but still a tad small when scooping solid into the tube. That was just a modified NMR tube widened on the top. The one on on the left should work much better. A Pasteur pipet joined to a slightly elongated 5 mm NMR tube.