Practical Function: Simply attach the stainless steel universal wheels to the bottom of the box to easily move heavy containers. The silent wheels are stable and quiet, do not scratch the floor, and help distribute weight evenly, reducing strain when moving. Allow 24 hours after application before use for best results. Note that lighting may cause slight color differences between the product and the image. 360-Degree Rotation: The mini adhesive pulley allows smooth movement in any direction, offering unrestricted and completely silent operation. Ideal for use with storage boxes in makeup organizers, kitchens, tabletops, bedrooms, bathrooms, living rooms, and flower shelves. Quality Material: These storage box casters are made of durable ABS material with small steel ball bearings, ensuring strength, wear resistance, and long-term reliability. Designed to move heavy items with ease. Note: Use on wooden surfaces may leave marks over time. Easy to Install: Just peel off the backing film and firmly press the caster onto a clean, smooth surface. For optimal adhesion, wait 24 hours before use. These smooth-rolling casters make moving heavy objects hassle-free. Wide Application: These compact casters can be used on shoe boxes, trash bins, and small containers to improve mobility. They also work well as DIY accessories for children's toys, craft projects, and other creative uses. Each caster supports up to 8 kg.