wanted spring loaded plunger castor for stepping stool, who has and shaft ,all plastic light work?

* McMaster-Carr offers a variety of spring-loaded plunger casters with plastic shafts. These casters are available in a range of sizes and capacities, and are suitable for light-duty applications such as stepping stools.

* Amazon also offers a wide selection of spring-loaded plunger casters with plastic shafts. These casters are available from various third-party sellers, and can be found in a variety of sizes and capacities.

* Grainger is another source for spring-loaded plunger casters with plastic shafts. These casters are available in various sizes and capacities, and are suitable for light-duty applications such as stepping stools.