Wide application: Suitable for baby toy cars, storage boxes, cloth buckets, storage boxes, mobile cartons, sideboards, bedside cabinets, side cabinets, suitcases/trash cans, flower pots, fans and other items. Easy to install: Adhesive design, installed on the bottom box, no complicated craftsmanship is required. Suitable for different types of storage boxes. It can be installed where you want to install, just a light push, you can completely liberate your hands. No noise and scratches: The universal rotation and precision ball bearings in the shaft make rolling easier, with unlimited durability and high shock absorption. It allows you to roll smoothly and quietly without making any harsh noises. The powerful bearing wheels make it easier to carry. Castors can be used on trolleys, workbenches, toolboxes, machinery, cabinets, stands, various items of furniture or heavy equipment