Description: All you need is a universal pulley that can rotate freely and has a strong load capacity. Help solve all the problems caused by heavy objects! Main Feature: Effective and labor-saving: just stick the universal circle on the bottom of the box, and the heavy box can be easily moved! It is suitable for handling and cleaning, and is suitable for storing boxes and packaging boxes of various types and sizes. 360 Degree Free Rotation: Ball-shaped pulley that can move to any angle, Unlimited, completely silent during use. Suitable for storing cosmetics, kitchen, desktop, bedroom, bathroom, living room, bottom shelf. Good Bearing Capacity: The roller frame is made of high-quality ABS material, which is strong and wear-resistant, and has a long service life. It can easily move heavy objects without stress. Specifications:Product Name: Universal Wheel Outer Diameter: 4.5cm*2.8cm*1.4cm Main Material: ABS 304 Stainless Steel Product Weight: About 30g Easy to Use: Just stick the seamless glue on the pulley and place the pulley on the bottom of the box for 24 hours in use. Smooth pulleys no longer worry about heavy objects! Package Included:4*Universal WheelsNotes:Due to manual measurement, there may be 1-2cm error, please understand. The color difference may vary depending on your monitor settings. We provide the best products and services. If you have any questions, please let us know and we will solve the problem as soon as possible. Thank you very much.