With adjusting screw and release lever, model 137 10 with blue dip-insulated lever, Forged, tempered jaws and special jaw shape for secure gripping, clamping and holding, GEDORE vanadium steel 31CrV3, zinc-plated, Jaw body sheet steel with high strength, Automatically welded upper jaw - absolutely firm connection with the steel sheet body, Sophisticated jaw shape guarantees three-point support for any material cross section, Threaded bore welded at bottom, No widening under most extreme loading, Safe release, Release lever under constant pressure of special spring