With adjusting screw and release lever, model 137 with blue dip-insulated lever.
Forged, tempered jaws and special jaw shape for secure gripping, clamping and holding.
Jaw body in high-tensile sheet steel.
Automatically welded upper jaw, absolutely firm connection with the sheet steel body.
Well conceived jaw design guarantees a three-point contact with all material cross-sections.
Threaded bore welded at bottom.
No widening under most extreme loading.
Release lever under constant pressure of special spring.