ICE – Master link for assemblies with ICE – balancers. When using two units of 2 leg slings, where by one of which is equipped with a balancer (IWK-2S) and both master links are in the crane hook, the calculation of the capacity can be based on 4 bearing slings (DGUV Rule 109-017) provided the load is symmetrical and the inclination angle is max 45°. Hence an increment of the WLL.