Skateboard / Longboard Bearing Spacers

Bearing spacers is a very important but very simple devices that are installing with your bearings. Most expensive bearings include them because it guarantees that the bearings will last long.
Basically what it does is, is to ensures that both the bearings are aligned correctly. It also ensures that wheels are not over tightened as this could also put more stress on the bearings.
When bearing spacers are not used, bearings can be installed incorrectly that can cause premature failure of parts or even skaters getting hurt.