Load capacity: a single universal wheel with a load capacity of 30 kg, a set of 4. It is the best choice to replace old furniture casters Rotating casters: 360° rotatable, you can change the forward direction at will and move furniture equipment easily and flexibly Material: rubber casters, metal mounting rods and ball bearings. High hardness, wear resistance, dustproof, quiet and safe, stable and durable Size: swivel caster diameter = 1.5 inches; height after installation = 60 mm; wheel width = 22 mm; mounting rod = M12 x 25mm. Size reference picture Suitable for indoor and outdoor smooth floors: home decoration and industrial applications. Various trolleys, other small mobile furniture (such as stools, coffee tables, plant trays, shoe cabinets, office chairs, sofas, beds, cribs, shopping trolleys). Various equipment, flight cases, instrument cases, tool cases. Schools, garages, shops, hospitals. Laminate, parquet, tiles, glass, carpets, concrete, marble