Conveyor rollers are used in unpowered (gravity-flow) roller conveyors, powered roller conveyors, roller-bed belt conveyors, and material transport stands to support and move bulky items such as boxes and totes. These replacement rollers can be used to replace or upgrade the existing rollers on compatible conveyors or stands. Each roller has a spring-retained axle that can be pushed in to install or remove the roller from the conveyor frame or stand. The rollers let loads roll from one place to another, reducing the effort it takes to move the loads in warehousing, package handling, manufacturing, and distribution tasks. Loads roll forward and back on the rollers, and they can be pushed from side to side along the width of the conveyor.