10 Shielded Bearing R155ZZ 5/32x5/16x1/8 inch Miniature BearingsR155ZZ Ball Bearings 5 32" x 5 16" x 1 8" 10 Bearings 10 R155ZZ Shielded Bearings, R155ZZ inner diameter is 5 32", R155ZZ outer diameter is 5 16" and the R155ZZ width is 1 8", R155ZZ is a popular size that could be used in many applications, each R155ZZ bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also R155ZZ bearings are pre lubricated with grease. Item: R155ZZ Double Shielded Ball Bearings Type: Deep