R2AZZ Shielded Miniature Bearing 1/8" x 1/2" x11/64"R2AZZ Shielded Ball Bearing 1 8" x 1 2" x 11 64" inch R2AZZ Shielded Ball Bearings, a standard bearing size with dimensions commonly used across many industries: 1 8" x 1 2" x 11 64" inch, each bearing has metal shields to protect the bearing from dust or any possible contamination, additionally, these bearings come pre lubricated with grease for smooth operation. R2AZZ Ball Bearing Deep Groove Ball Bearing Closures: Double metal shields (ZZ)