Here's an easy, affordable way to turn your Forster hand trimmer into a power trimmer. Simply remove the handle from your trimmer and replace it with this adapter, then use any electric screwdriver or power drill to provide the power. The cutter shaft and the stop collar are unchanged so accurate case length settings are maintained. It's a great way to make better use of your limited reloading time because in "power mode" you'll be able to trim more than two-hundred (200) cases per hour.