As with all Forster products the Forster Power Adapter For Case Trimmer is made from quality materials and is affordably priced. With this adapter any hand trimmer can be transformed into a power trimmer. The adapter is made to fit the Original Classic and .50 BMG case trimmers. The handle is simply removed from the trimmer and replaced with this adapter. Using a power drill or electric screwdriver is all that is required for power. In addition the stop collar and cutter shaft do not change allowing accurate case length settings to be perfectly maintained.