The Petzl Neox is a safety Belay device for climbing in halls and on rock faces. It's particularly suitable for climbers tackling indoor walls or the outdoor rocks as the integrated wheel ensures even rope flow and quick output. Clamping clams and the wheel are made of stainless steel, the housing is made of aluminium. When resting or in the event of a fall the rope tensions and the wheel blocks. The control lever for abseiling is ergonomically shaped and convenient to use. The Petzl Neox has been designed for single ropes, between 8.5 and 11mm in diameter. Engraved markings on the housing make it easier to insert the rope correctly.