The Tandem by Petzl is a lightweight and compact rope pulley with a dual axle, which has been designed for use in ropeways (with textile ropes). The design allows a smooth and snare-free run. Up to three carabiners can fit into the opening. The service load is 10 kN, the breaking load, at 24 kN, is considerably higher - a clear safety margin. Note: The pulley can be used for speeds up to 10 m/s maximum.