This vortex is excellent and prevents the use of both eppendorf tubes and large centrifuge tubes. It's gorgeous!

This product is exactly as described and I recommend it.

This is working perfectly for mixing model paints, and I recommend it. The seller is kind and helpful. I will leave a further comment later.

This is an extremely helpful tool for mixing acrylic paints used in model building. It’s designed to sit on the workbench and remain inactive until a paint bottle is pressed down, making it easy to use. The operation is very quiet, allowing a model builder to use it discreetly even late at night while their spouse is asleep. Furthermore, delivery from China to Belgium was exceptionally quick.