This is the one the professionals use

Comes with bark cutter

quick release buckles on tough comfortable padded elastic leg straps

when tied correctly it is reliable and runs well on modern double braid climbing lines

Petzl I'D L Self-Braking Descender (Large) Brand_GA Spares This is the one theID L Self braking descender with anti panic function for rescue. The ID L self braking descender is primarily designed for rescue. It has an ergonomic handle that allows comfortable descent control. The integrated anti panic function and anti error catch limit the risk of an accident due to user error. The AUTO LOCK system allows users to position themselves without having to manipulate the handle or tie off the device. Once locked, the rope can be