Includes : 

- High precision grade 5 steel balls for maximum speed.

- Precision polished chrome steel races reduce friction and increase.

- Glass filled nylon cage for extra durability.

- synthetic oil lube reduces friction and protects against corrosion.

- Inner race locks shield to provide barrier and keep bearings clearer. 

- non contact removable rubber shield designed for minimal resistance.

- bearing spacers reduce side loading to extend the life of the bearings manufactured with swiss precision and quality.