ISI Manual Clamps are designed and built for work-holding where process, space or cost prohibits the use of power clamps. The basic over-center toggle action used on the Vari-Clamp and the Toggle Clamp series ensures secure work-holding pressure by supplying tremendous force multiplications and locking ability. Plunger Clamps may be used as precision work locators for a variety of applications, and their simple design allows easy operation. Vari-Clamps are ordered “a la carte.” The basic clamp mechanism is standard while the arm, handle, pivot base and base plate are all optional allowing unlimited flexibility. Handles and arms can be custom built for special applications, and bases may be welded or bolted to fixtures, or bench mounted for manual work stations. On Toggle Clamps, the arm, handle and base are standard. Only their location and base-weld is optional. Plunger Clamps offer a pre-stop, plunger detent pin, plunger cover (weld flash protection) and a threaded body as options. The forged alloy steel components used in the Manual Clamps are precision machined, then assembled using heat treated tool steel pins and rust-proof finishes.