Despite the size of the caster (Ø100 - 200mm), R Series is rated as Light duty type - only 60 kgs per caster. Rubber tread is just light cushion but will help reduce noise and surface protection.
Carefully Zinc coating enhances rust and corrosion resistant. Apply the new Steel core Rubber wheel - the caster look quite strong but still elegant. The quality is assured as it is made by number one caster manufacturer of Viet Nam.