Used the klemheist when I did rapelling to lock the break if I took my hands of the break. Preferred it over the Prussik as it bite better to the rope when unde

Used the klemheist when I did rapelling to lock the break if I took my hands of the break. Preferred it over the Prussik as it bite better to the rope when under load because it twisted around it, and did release easily when the load was removed. It also was easy to slide along the rope.