A wand magnet that holds the standard rectangular magnet on one end and a smaller circular magnet on the other end. 

It can be used to activate any magnetic polishes on your nails while the polish is still wet. Hover the wand for at least 60 seconds over the nail while the polish dries, or paint your nail directly on top of the magnet while the polish sets.

You only need to magnetise the final coat of the polish as well magnetise the same way after applying top coat, it is not necessary to magnetise the initial coat of the polish.

The rectangular magnet can be used to create a cat eye effect by pulling all the magnetic particles into a single line across the nail. The circular magnet works by pushing away the magnetic particles, leaving a circle pattern in the centre.

Swatches shown use Light Up My Nights over the thumb, courtesy of @pretty.fluffing.ugly.