Wide range of uses: gaming chairs, office chairs, strollers, bookcases, etc. Field: Hardwood floors, carpet, tile, laminate, concrete, stone and vinyl, etc. . Dimensions: wheel diameter: 60 mm; stud diameter: 11mm; stud length: 22 mm. Before placing an order, it is recommended to measure the bolt opening of the office chair Polyurethane material: abrasion resistant, durable, quiet, good performance, load capacity: approx. 150 kg. Installation: Remove old casters and push in new casters until stem is firmly in place and secure. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it