Do a quick internet search for "Notch Rope Runner Pro Inspection Notice". Notch informs its customers that the device can fail if it is not properly checked (i.e. if it fails, it is because the user has not performed maintenance). However, this may instead be due to poor design where the end user cannot physically see the nib to inspect it with their own eyes to see if it is working as intended (safely) and properly clean around the nib to be able to make it work safely. It's shiny, newer, and slicker than the Singing Tree version, but I'd look for an all-in-one other than this "Pro" Rope Runner.
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