10 Shielded Bearing R1810ZZ 5/16x1/2x5/32 inch Miniature BearingsR1810ZZ Shielded Ball Bearings 5 16" x 1 2" x 5 32" inch 10 Bearings R1810ZZ Shielded Ball Bearings, Bearing inner diameter is 5 16" Inch, Bearing outer diameter is 1 2" Inch and Bearing width is 5 32" Inch, 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" inch x 1 2" inch x 5 32"