Description Description: Smooth and safe design: Self Adhesion Caster Wheel adopts rounded corners or, without burrs and gaps, to ensure a smooth and safe experience for your furniture Wear resistant rollers: Universal Wheel is made of sturdy and wear resistant rollers, which can slide seamlessly on various surfaces Material: Rotation Pulley is made of ABS and metal steel, with a sturdy design for long term use Easy installation: Roller Wheel can be easily connected without drilling, suitable for quick installation on coffee tables or other furniture Wide range of uses: Castor Wheels size is 4.8cmx4.8cm/1.89inchx1.89inch, which can be used in a variety of storage solutions to enhance the mobility of your home or office space Size Chart: 4.8cmx4.8cm/1.89inchx1.89inch Package Includes: 4 Castor Rollers Note: Please allow slightly errors due to manual measurement and different monitors.