Managed to decrease the cost! Go here: http://shpws.me/N6i8
They're the same but they are connected together so they will have a spot with no colour(white).
Do you have a fidget spinner with skateboard bearings(or similar size)? These caps will fit your spinner. It takes skateboard bearings which are readily available in many places. The bearings are 22mm OD x 8mm ID x 7mm Tall.
These bearings work: http://www.ebay.com/itm/10-Bearing-608ZZ-8x22-mm-608Z-Metric-Ball-Bearings-VXB-/400073187613?hash=item5d2638611d:m:mgY3Tje8TUIMghpOEnOYl3A
You will recieve one set that will cover one bearing. These are the best you can get because they snap in place and will not fall out in your pocket!