Allstarry Nail Lacquer Shaker Adjustable Varnish Bottle Lash Glue Shaking Machine Evenly Tools for Nail Art, Tattoo Ink (Black)

Absolutely brilliant, must have, piece of kit.

This thing is a great and a fantastic time saver. The only improvement would be if it was battery powered but that's a small thing!

This shaker works as intended. I bought it as a replacement, as my first one burned out after about 2 years of use. Some polish bottles seem to be a bit heavy for it so it may seem to struggle to shake. It is loud, but it works.

This thing does nothing to mix polish. My polish was still separated after using it. And it’s new polish, so it’s not ma matter of it being old.

I love it for shaking up model paints

I also recommend buying those ball bearings you plop into the paint jars for extra effectiveness. Wish they had longer straps for the larger Tamiya paint jars I use.