R6-2RS Sealed Ball Bearings Chrome Steel Lot of 10 Bearings R6-2RS Sealed Ball Bearings, this is a popular size that could be used in many application that uses this size 3/8" x 7/8" x 9/32". Bearings are made of Chrome Steel, each bearing has 2 Rubber Sealed to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube.