Petzl - RACK Volt it is powered by the

it is powered by the applied voltage

possible even with gloves

or a Munter hitch

Contained in a Highly Durable Padded Carrying Case

because the battery gauge clearly indicates how much battery you have left

Petzl - RACK Volt it is powered by theVariable friction descender with brake bars The design and configuration of the RACK bars make it easy to set up and insert the rope. Compact and lightweight, the device allows the user to adjust the amount of friction during the descent, to adapt to changing conditions. Allows the friction to be adjusted during the descent according to the weight of the rope: the lower bar is removable and easy to put in place Distributes friction and heat to help