REVIEW of the Petzl TWIN RELEASE pulley for mechanical advantage with built in progress capture
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Tree Work Tips: Mechanical Advantage with PETZL Pulleys (V2)!
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Swapping Progress Capture Devices on a Loaded Rope
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How To Use the TWIN RELEASE in a confined space rescue
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Bad with a throwline? You need to see this!
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TWIN RELEASE KIT - Petzl's 4:1 Hauling & Lowering System
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Why Snatch Blocks are AWESOME (How Pulleys Work) - Smarter Every Day 228
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It's NOT what you think
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