Product information: 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 seamless glue on the pulley and put the pulley on the bottom of the box for 24 hours to use. Smooth pulleys no longer worry about heavy objects! Features: All you need is a universal pulley that can rotate freely and has a strong load-bearing capacity. Help you solve all the problems caused by heavy objects! Efficient and economical: Just stick the universal wheel to the bottom of the box, and the heavy box can be moved easily! Suitable for handling and cleaning, suitable for storage boxes and packaging boxes of various types and sizes. 360 degree free rotation: spherical dough pulley, can slide at any angle, Unrestricted, completely silent when in use. Suitable for storage of cosmetics, kitchen, study, bedroom, bathroom, living room, and shelf storage. Good buoyancy: 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. Packing list: 4*Universal wheel or 8*Universal wheel