Metro 4″ Resilient Rubber Caster

Metro 4" Resilient Rubber Caster The Metro 4″ Resilient Rubber Caster helps you create a mobile shelving unit that meets your specific needs. Just combine it with Super Erecta posts and shelves. These casters come with a donut bumper at no additional charge. They feature a 4″ diameter resilient rubber wheel with a 1.25″ face and a non-marking, flat tread. This design offers a low noise level and good floor protection, though it has fair rollability and low resistance to grease and oils.