Do you find it difficult to move storage box? Then, you can not miss our products. Safe material made, with detailed workmanship, not easy to deform or get broken, sturdy for longer period use. Self-adhesive design, easy to paste to the storage box firmly and rotated to different angles, allowing you to drag boxes effortlessly. Features -Color:Transparent -Material:Steel, iron, ABS -Size:4.20X4.20X2.50cm/1.65X1.65X0.98in - Made of safe material, firm and wear-resistant, these small wheels is proper for longer servicing time. - Small caster wheels can be applied to various types and sizes of storage boxes and packing boxes, also good for trash can. - Universal pulley can move smoothly in different directions mutely and more effortlessly. - Simple structure, light weight, small size, easy to install and disassemble, will not damage the surface of your storage case. - These swivel swivel wheels will not scratch the floor easily, safe and useful, flexible and excellent, giving you nice using experience. Package list: 4 x swivel caster wheels 4 x adhesive patches 8 x screws