Wheel surface hardness is Shore A: 95±2 so the wheel can help reduce noise when operating. Plastic hubs helps reduce dust, water, silk goes into its Single precision bearing. Thus longer caster's lifetime with less maintenance.

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.