The Edelrid Ohm Climbing Brake acts as an assistant to increase rope friction when there is a large difference in weight between the belayer and the leader. In the event of a fall, the OHM increases the amount of friction in the rope so that a lighter belayer can easily hold a heavier climber.

It is a fundamental tool for balancing the weight between the belayer and the climber, significantly aiding the belayer's work.

The Ohm is installed on the first slip of the uphill path and can be installed directly on the bolt or on another slip.

The climber does not notice the difference because the Ohm by Edelrid does not prevent the rope from sliding upwards. In the event of a fall by the leader, the Ohm kicks in and slows the fall, thus helping the belayer who would have received a much more violent blow without this brake.