These self-adhesive mini casters are made of ABS and 304 stainless steel ball bearings, offering compressive strength, wear resistance, durability, and strong load-bearing capacity. The self-adhesive mini casters glide smoothly, roll quietly without harsh noises, and will not leave marks or damage flooring surfaces. With 360-degree rotation, these casters move freely in any direction and operate completely silently, making it easy to move storage boxes and small furniture—convenient and labor-saving. Simply attach the self-adhesive caster wheels to the bottom of the desired item and wait 24 hours before use. Ideal for easy movement and cleaning, the smooth-rolling wheels help eliminate the hassle of handling heavy objects. These self-adhesive mini casters are versatile and suitable for storage boxes, trash cans, cardboard boxes, and other lightweight items. They also serve as a great DIY accessory for children's toys, crafts, and small projects.