Features: Make from ABS materials with steel beads inside. Appliance Wheel can support you for long time. The pastes pulley can slide to any angles, not limited, quiet when apply, very suitable for kitchen, table top, bedroom, living room and flower shelf storage. We can put it in any bottom of furniture or kitchen appliance to make them moving easy. You just need to peeling down the backing and glues the adhesive Wheel to the bottom of the furniture. No drilling is required and there is no damage to the object. These casters not only be apply to shoes box, trash bins, small container for easy moving, but also a nice accessories. Specifications: Materials: ABS and metal steel Size: about 45x45mm/1.77x1.77inch Package Includes: 4Pcs Self Adhesive Casters Wheel note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.