All you need is a universal pulley that can rotate freely and has strong load-bearing capacity. It helps solve issues caused by moving heavy objects. Main Features: - Effective and labor-saving: Attach the universal wheel to the bottom of a box for easy movement of heavy items. Ideal for moving, cleaning, and use with storage and packing boxes of various types and sizes. - 360-degree free rotation: Ball-shaped pulley allows sliding at any angle. Unrestricted movement with no noise during use. - Suitable for cosmetic storage, kitchen, desktop, bedroom, bathroom, living room, and lower shelf storage. - Good load-bearing capacity: Roller frame made of high-quality ABS material, strong, wear-resistant, and durable. Easily moves heavy objects without stress. Specifications: - Product name: Universal Wheel - Outer dimensions: 4.5cm x 2.8cm x 1.4cm - Main materials: ABS + 304 Stainless Steel - Product weight: Approximately 30g - Easy to use: Apply the included adhesive to the pulley, attach to the bottom of the box, and let it set for 24 hours before use. Smooth operation ensures effortless movement of heavy items. Package Included: 4 x Universal Wheel