Pulley system efficiency tests with Petzl Maestro, I'd S, Pro Traxion and RollClip | Rigging Lab Academy
Petzl MAESTRO Descender with integrated progress-capture pulley – Rigging Werx
Petzl - This is MAESTRO S - The ultimate tool for technical rescue. A descender designed for technical rescue operations. Rescuers can adapt to any situation they may encounter when efficiency is