1. Polyurethane (PU) swivel wheels provide the elasticity of rubber wheels combined with the toughness and durability of metal wheels. Safe for all types of soil - Heavy duty trolley wheels have a capacity loading 200 kg - (50 kg per wheel) 2. Heavy-duty casters swivel 360 degrees. Smooth and quiet and sturdy. When the brakes are applied, the mounting plate and the wheels are locked simultaneously. 3. 4 x pivot with brake. Ball bearing and double locking provide maximum loading capacity and safety. 4. Wheels are ideal for a wide variety of DIY uses to industrial applications at home, schools, garage, stores, carts and hospitals, perfect casters for small equipment, furniture, ottoman, table bass, plant stands, shelves, caddies, workbench. 5. The proceeds are all taken in kind. Due to ambient light / display resolution and other reasons, there may be some color difference between the picture and the actual object. Please refer to the actual color. Size: 2inch & nbsp; | & nbsp; Color: 2brake + 2without Brake Name: Heavy-duty casters. High quality materials and total durability Simple installation and easy maneuvering. Perfect for moving small equipment and small space furniture, including coffee table, plant stands, shelves, shoe bins, toy bins, shopping carts and workbenches. Ideal for a wide variety of uses ranging from DIY to industrial applications in homes, schools, stores and hospitals, etc. Features: - Robust steel plate. & nbsp; - Double ball bearing swivel head. - Wheel type: black polyurethane, roller bearing. - Load capacity: 200 kg (50 kg each). Package contents: - 4 x wheels. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin