【 Self-Adhesive Casters】Easy to install and use. Just stick the self-adhesive stickers on the appliance or storage box you want. Free punching. Place it for 1 day after installation before use. 【Wide application】Suitable for flower pot bottom, nightstand, storage box, and bin bottom, small appliances, humidifier, air purifier. (The bottom should be flat) 【Roll Smoothly】 The wheels are made of ABS, with 360°rotation, not limited. With industry-leading design, you can move your item only with a slight push. 【High-Quality Small Caster】A single pulley roller can bear a load capacity of 20 pounds. Four rollers together provide a maximum load capacity of 80 pounds. 【What You Get】8* ABS mini caster wheels; 12*stickers; 32*Screws; If you have any problems during installation or use, you can contact us at any time. You need to clean the surface before pasting, and then it is best to heat the stickiness will be better!