Features: 1Mute Design: The wheels are made of special rubber material to reduce the noise generated by the trolley case during the journey, and enjoy a comfortable and quiet travel. 2Smooth Rotation: The wheel has strong bearing support, providing a stable and smooth movement experience, and easily cope with various ground conditions. 3360 Degree Rotation: Universal wheel design, even if the box is full of heavy objects, it can be easily manipulated and moved to improve the convenience of travel. 4Wear Resistant: Optimized design of PU rubber material, so that the wheel has high strength, compression and tensile resistance, long term use without deformation. 5Easy to Install: Easy to replace the wheel, with all the installation accessories and installation wrenches, no cumbersome operation, saving time and effort. Specification: Item Type:Suitcase Caster Replacement kitMaterial: PU rubber Package List: 2 x Rubber Universal Caster4 x Gasket2 x Screw2 x Screw Sleeve2 x Hex Wrench