The set contains 4 swivel casters with brakes. Each caster measures 25mm in diameter and is equipped with a right-angle L-shaped mounting plate and screws. Our casters are made of high-quality TPE material with good abrasion resistance. The wheel core is made of polypropylene, which is highly thermoplastic and corrosion resistant. The outer wheel is made of synthetic rubber, which is wear-resistant and has a good anti-slip effect. These casters run quietly and smoothly, without scratching the floor. They can support up to 40kg and are suitable for coffee tables, children's beds, cabinets and other furniture.