SET OF 6 CASTERS: 6-pack x 2.5 inch 360-degree swivel stem casters. Threaded post mounting, stem size: M10x25mm(D*H), wheel diameter: 2.5 inches. HEAVY DUTY CASTERS: Each swivel caster can handle a load of 45 kg. Strong enough and well suited for trolleys, chairs, cabinets or other furniture. With these caster replacements, you save energy and can easily move tables, chairs, shelves or other heavy items. SMOOTH AND QUIET MOVEMENT: Smooth, quiet and non-marking polyurethane swivel casters. With these wheels, you can flexibly move your scaffolding, mechanic's creeper to where you need it, and fix it easily and steadily. MULTIPLE USES: Caster replacements are often used for mechanic's creepers, service carts, cabinets, pallets and chairs, etc. 2.5 SWIVEL CASTERS: Heavy-duty steel axle, rust-resistant chrome finish 360-degree swivel casters. For 4-pack, see ASIN B091BSHV2S. For 6-pack, see ASIN B07XF9VS8R. For 12-pack, see ASIN B091BTNJR3. Our products are made from the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship all orders within three days of purchase, and the estimated delivery time is 8-15 days. Please pay attention to the product's size and dimensions when shopping to ensure 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 do not 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.