This Listing is for one SES brand 6x2" wheel replacement kit containing 4 rubber on cast iron wheels with 3/4" roller bearings including 3/4x1/2x2-7/16" spanner bushings and 1/2" axle bolts. These are very versatile wheels that can be used on a wide variety of equipment including dumpsters, trash bins,stock carts, plant carts, toolboxes etc.