These are convenient casters for placing heavy items like washing machines on. They can be extended from 440mm to 690mm to fit a washing machine. This is a used item, so please only purchase if you understand that it is a used item. Shipping included (anonymous shipping) ※※※※※※※※※※※※※※※※※※※※※※※※※ ※ Please check the item for any defects upon arrival and provide a receipt evaluation within 3 days. Please contact us if you have any issues. ※ Please leave a comment if you do not have any positive feedback. ※ We cannot accept cancellations or handle any issues after shipping. Please ask any questions before purchasing.