Our ergonomically designed manual crimpers and decappers transform the standards of vial crimping and decapping. The body is constructed of tough, light glass filled plastic; providing light weight and high strength. The curved high-strength handles create a natural grip, greatly improving comfort over blocky metal grips. The tools are activated by a bottom-pull handle which is steadier to hold than top-push handle designs. It is easy to keep the tapered jaws or the crimper from wobbling during crimping or decapping. The adjustment knob, which sets the stroke of the tool and the tightness of the crimp, is conveniently positioned at the head of the crimper. The easily-viewed knob clearly displays + and - symbols along with directional arrows. This simplifies adjusting the level of crimp desired. No more extra squeeze necessary after the limit stop has been reached! You can clearly see the crimp setting has been reached when the knob touches the crimper body. To ensure a smooth and consistent operation, the hand crimper uses the same precision tolerances as the electronic crimper and decappers.