R133ZZ Shielded Ball Bearings Lot of 10 Bearings 3/32" x 3/16" x 3/32" inch R133ZZ Shielded Ball Bearings, the inner diameter is 3/32", outer diameter is 3/16" and the width is 3/32", 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.