Made of solid brass with brushed surface, strong and durable structure to withstand daily use and versatile 360 degree rotation to provide more mobility and maneuverability. The top plate provides greater stability in use Suitable for all types of its equipment and furniture of ite size, including coffee tables, plant stands, bookshelves, wooden chests to give them the ability to move Size: Threaded rod length: 27mm. Top plate: diameter 28mm. Can raise the furniture by 3mm. Please check the size before purchasing Package includes: 4 x brass casters with installation instructions