Easy to use: Perfectly stick to the pulley, please keep the adhesive area clean before sticking. Industrial casters with ball bearings have reserved screw holes, you can insert or tighten them according to your needs. Efficient labor saving: Just stick the self-adhesive pulley on the bottom of the box, heavy objects can be easily moved without pressure, smooth wheels allow heavy objects to move, no more worrying about objects! Place of use: The universal paste roller can be used in storage boxes, trash cans, ordinary boxes, wooden boards, cosmetics storage and flower shelf storage. < p>Note: The data is all manually measured, please allow 1-3 cm error due to light and display differences, there may be color difference, please refer to the actual item received.