Features: Protect your floors while enjoy smooth and quiet rolling with the floor protector rubber casters wheels, designed for both stem and top plate mounting option. These casters feature a specially formulated polyurethane rubber tread that safeguards hardwood, lvt, laminate, tile, and slates surfaces from damage. For homeowners, office workers, and DIYer enthusiasts who frequently move furniture or equipment. Perfect for use in homes, offices, studios, and any environment where flexible mobility and secure positioning of furniture are required. Enhances your furniture's functionality and flexibility with these robust caster wheels, designed to make repositioning tasks simple and efficient on any surfaces. Specifications: Component:Metal, Plastic Single weighing: about 25KG Size1:Approx.4x5.5cm/1.57x2.16inch Size2:Approx.4.9x6.5cm/1.92x2.55inch Package Includes: 4pcs Furniture Casters note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.