SR2ZZ Shielded Stainless Steel Ball Bearings 1/8" x 3/8" x 5/32" inch Lot of 10 Bearings SR2ZZ Shielded Stainless Steel Ball Bearings, this is a popular size that could be used in many application that uses this size 1/8" x 3/8" x 5/32". Bearings are made of Stainless Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.