Designed by Notch with original inventor Kevin Bingham, the Notch Rope Runner Pro has enhanced ergonomics and rope friendly edges. Designed by Notch with original inventor Kevin Bingham, the Notch Rope Runner Pro has enhanced ergonomics and rope friendly edges. The Notch Rope Runner Pro is the ultimate work positioning device. Rope Compatibility: 11 – 13mm Working Load Limit: 287lbs (130kg) Weight: 15oz (425g) Materials: Hot-forged aluminum, stainless steel, nylon Incredibly easy SRS or MRS climbing Unparalleled smooth one-hand descent Fully mid-line attachable (stays in one piece!) Rope friendly edges Flattened 'bird' sections for comfort when descending Multiple friction settings Integrated central tending point for attachment to a chest harness Improved sealed ball bearing pulley Designed by Notch with original inventor Kevin Bingham Internal spring keeps it safe from dirt and debris Slic pins keep all of the parts together when the device is opened Country of manufacture: TW