Specification: Product name: Furniture ball caster Product material: ABS Color: as shown in the picture Weight: 90g Quantity: 8 Product size45*28mm/1.77*1.1in Material: The sticky pulley is made of high quality ABS material, firm and wear resistant, with long service life. the surface is smooth, and it won't be stuck by crumbs, hair and sand, and you will enjoy smooth and quiet movement. It can easily move heavy objects without pressure. Easy to Use: There is a non-marking label behind the steering wheel. Just tear off the protective film All you need to do is attach the seamless adhesive to the pulley and place the pulley in the bottom of the box for 24 hours to use. The smooth pulley lets heavy objects pass through no longer a hassle! Durable And Scratch-Free: With unlimited durability and high shock absorption. These replacement casters allow you to roll smoothly and quietly without making loud noises, and ensure you won't scratch or leave marks on any surface. Pulley for storage box. A Many Uses: The wheels can be used in a variety of applications, such as: B. in wooden boards, bins, storage boxes , normal crates, shoe boxes, etc. which are suitable for various storage boxes with a maximum load of 8 kg. 360 Rotation: Our self-adhesive swivel casters can slide at any angle without restriction, which greatly reduces the intensity of the work of the workers. and keep quiet during use to reduce noise while sliding.