Set of 10 Unflanged 3/32" Slot Car Bearings 3/32" x 3/16" x 3/32" 10 Bearings Set of 10 Unflanged Slot Car 3/32" Axle Shielded Ball Bearings, Bearing inner diameter is 3/32" Inch, Bearing outer diameter is 3/16" Inch and Bearing width is 3/32" Inch, 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.