Line pulling force 3/4 - 6 metric tons. Conforms to ANSI / ASME B30.16 and all relevant worldwide standards including the European Machinery Directive. Try using the SLB in free chain mode and the brake will instantly apply to hold the load, minimizing the risk of an accident. The Silver Series has a zinc-nickel and chrome plating that is more durable and corrosion resistant than paint.