It can replace a conventional pulley, carabiner & swivel and is lighter, less expensive and saves valuable vertical space. It also allows installing/removing the rope while the pulley is still anchored.
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Rock Exotica Omni-Block 1.5″ Pulley Black One Size
These patented devices revolutionized pulley use when they were introduced in 2005. It can replace a conventional pulley, carabiner & swivel and is lighter, less expensive and saves valuable vertical space.