R2-2RS Sealed Ball Bearings (ABEC-5) 1/8" x 3/8" x 5/32" inch Lot of 10 Bearings R2-2RS Sealed Ball Bearings (ABEC-5), R2-2RS is a popular size that could be used in many application that uses this size 1/8" x 3/8" x 5/32". R2-2RS Bearings are made of Chrome Steel, each R2-2RS bearing is rubber sealed from both sides to protect the bearing from dust or any possible contamination, R2-2RS bearings are pre-lubricated with grease.