The Frankford Arsenal® Perfect Seat Hand Primer is designed to prevent over-seating and crushing primers, giving you consistent results every time. It includes a precision dial that lets you adjust the seating depth in increments of 0.001 inches, with a total adjustment range of 0.05 inches. Once the desired depth is set, the tool’s positive hard stop ensures that the primer cannot be seated any deeper, regardless of how much pressure you apply to the handle. This thoughtful design allows for reliable, precise primer seating with every use.