Yamaha Blaster ATV Front Axle Sealed Ball Bearings Complete Bearings kit for use in the Yamaha, ATV Blaster front axle both wheels bearings, the kit contains 4 bearings, they will fit in all model years, Bearings are made of Chrome Steel, each bearing has 2 rubber seals to protect the bearing from dust or any possible contamination and pre-lubricated with grease.