highly resilient in continuous use, up to 10 times longer service life, precise, smooth-running screw joint, forged, large contact surfaces on the tips: no twisting of the rings, easy assembly, slim pliers head for optimal access to the workpiece, opening spring in the joint, protected and cannot be lost , handles covered with non-slip plastic, with overstretching protection (adjustable with a stop), adjustment using a hexagon socket screw, ideal for series production, as overstretching of the rings is effectively avoided, tips used: spring steel wire, drawn, pliers body: chrome vanadium electric steel, forged, oil-hardened