Cushion grey PU tread is non-marking material. This caster will leave any mark on your clean & shiny floor. The PU wheel is also resist to water, oil, grease and some light chemical.
Strong steel bracket (3.0 mm steel thickness) - thicker and more sturdier than other competitor's medium class ones. With Hi class PU tread can hold up to 110kg load capacity per 1pcs. Definitely best choice to use for institutions and light industry.