For secure, high-pressure clamping, even using only one hand With hollow-section bar and integral clamping arm In cold-drawn profile-section steel, hot-forged to shape and with optimum heat treatment guarantees torsion-free transference of the clamping force High-gloss zinc-plated - for good protection against corrosion and non-dirtying surface With fine tooth and pawl mechanism for careful, fast clamping action and high force transference due to lever action The clamping force cannot be released or reduced by vibration With easy-grip powder-coated handle incorporating a release lever The movable clamping arm has a drop-forged, torsion-resistant profile section, and a precise mechanism for providing the highest clamping pressure