The lever is vertical in the clamping position, automatic stepless adjustment of the clamping height up to 35 mm with an almost constant clamping force? without manual change of the pressure screw position, adjustable clamping force of up to 2500 N depending on the setting of the adjusting screw in the joint, stable, tempered steel sheets for a long service life, hole pattern of the base plate suitable for millimeters and inches, high-quality, oil-resistant 2-component plastic handle