Ball Bearings 5/64" x 1/4" x 9/64" Lot of 10 Bearings High Quality 10 inch size Ball Bearings, the inner diameter is 5/64", outer diameter is 1/4" and the width is 9/64", this is a popular size that could be used in many applications, Bearings are made of Chrome Steel each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.