High quality: wear-resistant rubber wheels are suitable for almost all types of floors, strong and durable, wear-resistant, shock-absorbing and quiet. -Material: The screw caster is made of pure copper and the screw is made of iron, high hardness, bright color, beautiful and fashionable, exquisite workmanship, strong and durable. -Features: solid brass casters precision-designed, quiet, wear-resistant, smooth rolling, 360 degree rotation, good stability. -Easy to install: Casters with screws are easy to use, and the package contains screws for easy installation in a short time. -Usage: They are generally used in small equipment and small space furniture, including piano legs, coffee tables, sofas, plant racks, bookshelves, toy boxes, storage boxes, etc.< /p>