The wrenches are developed with many features, which make them different from the competitors on the market Anti-slip surface treatment that ensures a firm grip on the wrench with oily hands No sharp edges on the roller, both sides are chamfered Slimmer jaws with minimal play Laser engraved scale Higher gear ratio between roller and jaw Stronger tightening Black oxidized surface treatment according to DIN 3117/ISO 6787 Chrome vanadium industrial steel