1.Clever Design: The well thought out L shaped design of the mounting plate and the quality cold rolled steel plate material save space. The dust proof rubber cover design prevents dust, prevents hair from getting tangled, and has a long life. 2.Safety: Five ly improved mounting holes, horizontally fixed guide rail, does not deform easily. The corners are reinforced to make the mounting plate more stable. Precision ball bearings, rivet connection is firm, sturdy and durable. 3.Floor Protection: It is wrapped with soft TPE rubber material to ensure that it does not leave scratches or marks on the floor and is easy to move. 4.Practicality: Our rollers can be used to all kinds of broken, damaged, or hard to use household appliance and furniture rollers. Usually used for small projects and mobile furniture, including dressers, boxes, under bed drawers, shoe cabinets, toy boxes, cabinets, bookshelves, easels, etc.