Description: Function: You only need to stick universal wheels on the bottom of the box, and you can easily move the heavy box and roll it in any direction. Sticky pulleys are easy and easy to use, furniture for cosmetic storage, kitchen, tabletop, bedroom, bathroom, living room, flower stand storage, etc. Material: The storage box casters are made of strong material, sturdy and durable, can be used for a long time, slide smoothly, and have strong load bearing. Stability: The center of gravity of the four wheel design is more stable, it is not easy to when pushed, the force is distributed evenly and more securely, and it is easy to install. Use: The casters are not only suitable for boxes, trash cans, and small containers for easy moving, but also a nice DIY accessory for crafts and more. Specification: Material: PP, Traceless glue Size Chart: 2cmx4.2cmx1.7cm/0.79inchx1.65inchx0.67inch  Package Includes: 4 Caster Wheels(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.