Features: Experience rolling with our premium PU ball casters, designed to eliminate noise disruptions for a peaceful environment using quality materials. Featuring a precise 11x22mm size, these furniture casters fit most standard chair legs seamlessly and offer excellent wear resistance for long lasting performances. Ideal for office workers, students, and homeowners who prioritize quiet mobility and efficient daily routines in their spaces. Perfect for use in quiet settings like offices, libraries, and homes, where smooth movement and floor protections are essential for undisturbed activities. The PU construction safeguards your floors from scratches, ensuring surfaces remain pristines on wood, , or carpet while enhancing overall flexibility. Specifications: Materials: PU Specifications: 2 inches Wheel diameter: 50MM Wheel width: 45MM Installation height: 72MM Rod diameter: 11MM poles height: 22MM Attribute: single set (1 set of 5 pieces) Practicality: Suitable for all types of office chairs, providing a smooth moving experience, effectively protecting the floor from scratches, reducing noise, and suitable for various usage scenarios such as home and office. Package Includes: 1 set of 2-inch PU spherical wheels (pack of 5) note: Before using the accessory, please check if it is compatible. Pay attention to the storage methods.