Fitted 6-mil vinyl dust covers are available for the two different size mills. They extend the life of your machine and keep it looking like new by keeping it clean and dust-free when not in use. P/N 5150 fits both the 5000-series and 5400-series manual mills. P/N 5151 fits the larger 2000-series 8-direction manual mill. They are not large enough to cover stepper motors installed on CNC machines. The clear covers have a red SHERLINE logo printed on them. Add a professional touch to your workshop with these fitted covers.