Jergens Heavy Duty Long Handle Push-Pull Clamps are of exceptionally robust construction featuring cast and machined handles and bases. The clamps are designed with a low plunger height and with a mechanism guarded within the base to avoid finger traps. The plungers feature a precision ground diameter that runs in a close-toleranced hole in the base casting. All axles run in either the cast iron of the handle or in the close-toleranced holes of hardened parts.