Pulley system efficiency tests with MAESTRO, I'D S, PRO TRAXION, ROLLCLIP, SPIN L1, SPIN L1D... - Petzl USA
![Nick Croudace UK on Twitter: "My homemade Petzl Jag (4:1 pre-rigged hauling system) #advancingprofessionalrescue http://t.co/yKkZfZKSsy" / Twitter Nick Croudace UK on Twitter: "My homemade Petzl Jag (4:1 pre-rigged hauling system) #advancingprofessionalrescue http://t.co/yKkZfZKSsy" / Twitter](https://pbs.twimg.com/media/CBk_GPGWYAAMnEk.jpg)
Nick Croudace UK on Twitter: "My homemade Petzl Jag (4:1 pre-rigged hauling system) #advancingprofessionalrescue http://t.co/yKkZfZKSsy" / Twitter
![Amazon.com : PETZL P51A PRO Traxion Very Efficient Loss-Resistant Progress Capture Pulley : Climbing Pulleys : Sports & Outdoors Amazon.com : PETZL P51A PRO Traxion Very Efficient Loss-Resistant Progress Capture Pulley : Climbing Pulleys : Sports & Outdoors](https://m.media-amazon.com/images/I/71gNdPB-XLL.jpg)