This 11.4cm fidget carries two nuts along a single threaded shaft, each riding a different helix direction. Turn the shaft or spin the nuts and they travel toward opposite ends. Every piece comes in its own colourway, so the one you receive is entirely its own. The grid infill on the circular top and the ribbed sides give it a distinctly mechanical look.
People will stare at it and try to work out the trick. Twist the shaft back and forth and watch them glide in opposite directions, stopping only when they meet. It belongs on a work surface and holds your attention while you concentrate on something else.
Pack it in a box and see them turn it over, figuring out the trick before they even let go. It finds a permanent spot on a work surface and stays within reach.










