High-quality materials: Made of high-quality PU material and steel, with built-in ball bearings, so that the casters can slide more smoothly. A single caster bears 35kg and is durable. It is the best choice for replacing old furniture with casters. 3 caster combinations: 4 casters (4 brakes; 4 rotations; 2 brakes + 2 rotations), 2 sizes of threaded rods, M8*15mm, M10*15mm, solid casters are easy to install and very durable. Floor protection: The furniture casters have a durable and soft polyurethane rubber coating that can slide easily on any type of floor. The rubber furniture wheels are also very quiet and protect your floor from scratches and marks. Flexible and safe: 360°rotation, you can change the direction at will, flexible and stable. Casters with brakes can ensure the safety of people and goods at all times and in every corner. Wide range of uses: often used to carry all kinds of small furniture. Such as coffee tables, plant stands, washing machines, TV cabinets, stools, shoe cabinets, bookshelves, storage boxes under the bed, etc. Using casters can help you easily move furniture or machinery from one place to another, thus saving time and energy. Mobile casters can be used for all types of small mobile furniture. Such as coffee table, tray cabinet, plant rack, washing machine, TV cabinet, stool, shoe cabinet, bookcase, storage box under bed, etc. Product name: Swivel casters, furniture casters, transportation casters Packing quantity: 4 Material: PU (Polyurethane) Color: transparent Wheel diameter: 2inch(50mm) Wheel width: 21mm Installation height: 70mm Mounting rod screw specifications: M8*15mm, M10*15mm, 3 product combinations: 4 brakes; 4 rotations; 2 brakes + 2 rotations Product features: high load-bearing, quiet, and wear-resistant Bearing range: 35kg (1 piece) Scope of application: kitchen cabinets, shelves, display racks, furniture, Mobile industrial equipment, etc. Notice: Due to the material and production process, there may be slight errors in color and size, please understand.