3-way/tribar fidget toy caps

thingiverse

Here's a simple trick to make your fidget spinner spin better with custom caps: The reason for using special caps on a fidget spinner is that they help prevent the bearing from falling out. But why do we need this extra protection? It's because when you place standard caps directly onto the bearing, there's a higher chance of them coming loose and getting in the way of the spinning mechanism. This can cause your fingers to inadvertently slow down the spinner as they try to grip it. With custom caps, however, the risk of the bearing falling out is significantly reduced.