"THE SET INCLUDES A SHRINKER JAW, A STRETCHER JAW AND TWO HOUSINGS; MOUNTED PLATE NO INCLUDED; REPRODUCE ALMOST ANYTHING REQUIRING THE COMBINATION OF A CURVE AND AN ANGLE; BOTH TOOLS CANPRODUCE CURVES AS TIGHT AS 3 INCH RADIUS; THE HAND OPERATED PRESS MULTIPLIESYOUR PRESSURE BY A LEVERAGE FACTOR OF 45, GIVING THE HARDENED STEEL JAWS TREMENDOUS FORCE; FORM MILD STEEL UP TO 18 GUAGE; EACH TOOL COMES ASSEMBLED WITH DRILLED & TAPED HOUSINGS FOR EASY MOUNTING TO YOUR BENCH"