These clamps are made completely of tempered forged steel. They are excellent for welding and woodworking alike. They have a clamping pressure of up to 660 pounds! The mightymini's sliding arm moves to position itself right next to your work-piece to support the acme threaded screw! By comparison, when a C-clamp is used to do the job of a 1" C-clamp, the point of support for the screw does NOT move... leaving the extended screw to do all of the work. The results can be a clamp that walks... or worse, a screw that bends or breaks. FEATURES:

RAIL, FIXED JAWS AND PRESSURE PLATE HEAT-FORMED IN ONE PIECE FROM COLD DRAWN PROFILED STEEL....optimized for high static stress loadings, tempered and electro galvanized.

TEMPERED STEEL SLIDING ARM, DROPPED FORGED, ELECTRO GALVENIZED.

HEAT TREATED HIGH CARBON ACME THREADED SCREW, TEMPERED AND QUENCHED TO GIVE YOU GREATER LOADING CAPACITY AND LONGER SERVICE LIFE.

TOMMY BAR STEEL HANDLE FOR EXTRA POWER.

SHIPPING IS 6.00 REGARDLESS OF QUANTITY YOU PURCHASE!!!!!