JBF National manufactures these adjustable handles (also known as clamping levers) from a black zinc coated low carbon steel. Maintaining maximum hand torque application in limited space situations is what low profile adjustable handles excel at. With a black phenolic ball knob end, the operator has positive palm engagement to make sure that the required torque is delivered each and every time. Simply elevate the handle 15 degrees, rotate to the desired position, and depress lever again for the most positive and secure handle repositioning.