Easy to Install: We sell a set of casters, a set of 8 casters, the wheel is made of polyurethane materials. No damage to the ground, quiet, suitable for a variety of indoor and outdoor ground. Load Capacity: With load capacity of up to 100 pounds (4 casters), it saves effort and is easy to push, saving you energy and time for better and use. Silent and Trackless: The casters are made of nylon material, easy to roll and silent and trackless, better protecting the ground, and can be rolled on a variety of ground. Wide range of application. 360 Degree Universal Casters: 360 Degree Rotation, It can save time and effort, push it more easily to the place you need. The casters are suitable for trash cans, storage boxes, small furniture, laptops, machines or other objects that need to be moved more easily. Note:Due to different production batches, the color , which does not affect the use. Colour:As Shown Material:Nylon+Metal Package Contents: 8 * 1.5 Inch Casters Wheels Set Only the above