10 Ball Bearings R14-2RS 7/8" x 1 7/8" x 1/2" inch 10 Ball Bearings R14-2RS, the inner diameter is 7/8", outer diameter is 1 7/8" and the width is 1/2", this is a popular size that could be used in many applications, Bearings are made of Chrome Steel each bearing are rubber sealed from both sides to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.