The wheels are convenient and quiet,wear-resistant,good bearing capacity,the bearings are ball bearings.Replacement wheels for your suitcase,they are a good replacement for the wheels that have lost their tread before,easy to install,keys,axles and screws included in the package. A more affordable way to replace the suitcase is to simply remove the worn casters and install new ones,which is better than throwing away a suitcase and buying another one. Suitable for all sizes of suitcases,furniture that needs to be moved,wheelchairs,etc.Please confirm the size before purchasing,measure the inside and outside width of the bracket.