10 Shielded Bearing R1810ZZ 5/16x1/2x5/32 inch 5/16 Bore BearingsR1810ZZ Shielded Ball Bearings 5 16" x 1 2" x 5 32" inch Lot of 10 Bearings R1810ZZ Shielded Ball Bearings, the inner diameter is 5 16", outer diameter is 1 2" and the width is 5 32", Bearings are made of Chrome Steel each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre lubricated with grease. Item: R1810ZZ Ball Bearings Type: Deep Groove Ball Bearings Dimensions: 5 16" x 1 2" x 5 32"