A set of 4 soft rubber wheels, each measuring 2 inches in diameter, are included in this package. These wheels are designed to rotate 360 degrees and are known for their silence and sturdiness. They are made of a combination of PU rubber and steel, and are black in color. The wheels are also soft and non-skid, so they won't leave marks on floors. Each wheel can support up to 90 kg of load, with a total capacity of 360 kg for all four wheels combined. The package includes 2 casters with brakes and 2 without brakes. These wheels can be widely used for various purposes such as flight cases, instrument cases, display and exhibition equipment, dollies, tool boxes, light machinery, equipment stands, mobile workstations, speakers, cabinets, stands, amps, electrical enclosures and furniture.