General description The Sollbry 4Pcs Office Chair Caster Wheels are designed for heavy-duty use, providing silent and smooth mobility for various types of furniture. Made from high-quality polyurethane, these casters feature silent double bearings and sturdy screws, ensuring durability and ease of movement. Technical specifications Thread Diameter: 8mm Thread Length: 25mm Wheel Diameter: 40mm Installation Easy to install by simply rotating the holes and pulling the screw, without the need for additional screws or screwdrivers. Installation process is straightforward and convenient, eliminating complicated steps. Usage Suitable for heavy furniture such as sofas, beds, wardrobes, and more. Enhances the mobility and flexibility of furniture, making it ideal for both private and commercial environments. Other information Each caster is equipped with two reliable brakes to firmly lock furniture in place, ensuring stability and safety. 360-degree rotation allows for easy maneuverability and