Floor Protection: It is wrapped with soft polyurethane material to ensure that there are no scratches or stains on the floor and it is easy to move. Safety - Five horizontal mounting holes are used to fix the guide rail and will not deform easily. The angle is increased to make the mounting plate more stable. Intimate L-shaped design mounting plate for space saving and easy installation. The newly improved five mounting holes fix the guide rail in the horizontal direction and will not deform easily. The corners are reinforced to make the mounting plate more stable. Sturdy and Durable - Each wheel is equipped with high-quality ball bearings. High load capacity: The load capacity of each wheel is 10 kg. Wide range of applications: Typically used for small projects and movable furniture, including dressing tables, boxes, under-bed storage, shoe cabinets, toy boxes, wardrobes, bookcases, easels, etc. Product description 5 fixed holes, improve installation stability Made of high quality