Sliding the nut up and down the zigzag threads creates a smooth, repeatable loop. The oversized hexagonal bolt sits on a two-tiered base wrapped in thin red accent bands, with a peach body and red-striped edges. The thick spiral threads are the main feature, and the matching nut rides them in both directions without stopping.

At 9.5cm, it sits on your desk and takes no batteries or app, just a mechanical loop you can repeat whenever your hands need something to do.

It packs easily into a bag if you want to bring it along and let someone else try it out.