Ball Bearings 3/4" x 1 5/8" x 7/16" SR12-2RS Stainless Steel Lot of 10 Bearings High Quality 10 bearings Stainless Steel Ball Bearings , this is a popular size that could be used in many application that uses this size 3/4" x 1 5/8" x 7/16". Bearings are made of Stainless Steel and can rotate up to 20,000 rpm, 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, Bearings are packed 10 bearings in one plastic tube.