10-Pack Ceramic Shielded Bearings R168ZZ 1/4" x 3/8" x 1/8" Bearings Outer Diameter - 6 inch (6") R4ZZ outer diameter is 5/8"

R4ZZ outer diameter is 5/8" and the R4ZZ width is 0

627-2RS Full Ceramic Ball Bearing

Equal: 6305 RS / 6305 2RS

7204CYDUP4 Nachi Angular Ball Bearings

10-Pack Ceramic Shielded Bearings R168ZZ 1/4" x 3/8" x 1/8" Bearings Outer Diameter - 6 inch (6") R4ZZ outer diameter is 5/8"R168ZZ Shielded Ball Bearings With Ceramic Balls 1 4" x 3 8" x 1 8" inch Lot of 10 Bearings R168ZZ Shielded Ball Bearings With Ceramic Balls, a standard bearing size with dimensions commonly used across many industries: 1 4"x 3 8"x 1 8", each Comes with double metal shields (ZZ) to keep out dust and dirt, additionally, these bearings come pre lubricated with grease for smooth operation, Ceramic Balls are the highest standard of balls that can make