Please search for [WQSQ], More choices, More exciting It saves your financial costs and also protects and decorates your furniture, which will be a satisfying and enjoyable shopping experience. Name: Heavy Duty Castors Function: 360-degree rotation, no noise. Packing: 4 Heavy Duty Castors Material: Rubber Size: 100mm-4in,125mm-5in,150mm-6in Color: yellow Carrying capacity: 540kg/660kg/750kg Adaptation range: office chairs, cribs, small equipment, furniture, cabinets, shelves, display stands, plant stands, bookshelves, trolleys, workbench, mobile industrial equipment, etc. Tips: Product transportation time is generally 15-20 days, please be patient and wait for the surprise. If you have any questions, please do not hesitate to contact us. All products are taken in kind and manually measured. Due to the shooting angle, light and display, there will be inevitable slight chromatic aberration and error. If you are satisfied with this purchase, please give us a good evaluation of the store and the product, we will be very honored. Thank you for visiting our shop You can consult us if you have any questions, and we will get back to you within 24 hours