Our tool box caster kits are designed to add mobility to your tool storage, whether it’s a Craftsman tool box, a Waterloo tool box , a Snap On tool chest, a Matco tool box, or some other brand, we’ve got you covered. This 4″ Value Line Heavy Duty Tool box caster Kit features 4″ polypropylene plastic casters, 2 swivel with tread brake and 2 rigid. This kit is perfect for use in garages, workshops, factories, and more! Please verify top plate dimensions in second image prior to ordering.