Of all the components that make up this Rear Wheel the O Ring(d:2.4,id:14.8) has the lowest price.
On this parts fiche the Bolt is the most specified component.
A sample from the products for the Rear Wheel include: Spoke Set,rr Wheel, Axle,rr, Tire,rr(140/80-15m/c 67h), Protector,whl Inr Tube.