Box joint, fast adjustment via button press directly on the work piece, freely adjustable, easy super fine adjustment, high transmission ratio
for noticeable amplification of manual force, for work pieces with parallel surfaces (nuts, screws etc.), also ideal for bending thin parallel work
pieces (e.g. metal sheet), parallel jaws without profile to protect surface coated work pieces, "Ratchet effect" for screws by using the jaw stroke,
extremely resistant overall construction, high quality tempered.