1/8" Axle Unflanged Slot Car Bearings Lot of 10 Bearings 1/8" x 1/4" x 7/64" inch 10 Slot Car 1/8" Axle Ball Bearings, this is a popular size that could be used in many applications, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.