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Descenders - Petzl USA | Tactical
Friction modes and tie-offs for the HUIT - Petzl USA
Petzl Pirana – A Canyoneer's Rappelling Tool
Petzl Pirana Club Figure 8 Descender Green - Bentgate Mountaineering
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HUIT ANTIBRULURE - Belay-Devices-And-Descenders | Petzl USA