These caster wheels are for anyone looking to improve the mobility of their furniture. The embedded design ensures they remain unobtrusive, while the heavy-duty plastic construction provides durability and a smooth, silent operation. Ideal for office chairs, beds, and other furniture, these wheels offer the combination of stability and ease of movement. Features -Color:Black -Material:Plastic -Size:5.50X5.50X2.50cm/2.16X2.16X0.98in -Wheel diameter16.5mm -Wheel width:19.5mm -Load bearing:30kg -Mounting height:9mm -Rotating radius：24mm -Mounting hole diameter:48mm -Quiet operation: these caster wheels are designed to operate quietly, eliminating noise and ensuring a peaceful environment -Heavy load support: built to support heavy furniture, these wheels offer strong loadbearing capacity, ensuring durability and strength - design: the design enhances stability, preventing tipping and ensuring secure placement of your furniture - installation: these wheels are designed for installation, preserving the aesthetic appeal of your furniture without any visible alterations -Universal swivel: with universal swivel capability, these caster wheels allow for easy and flexible movement, making furniture movement effortless Package list: 4 x furniture casters