The Notch Rope Runner Pro is approved for SRS or MRS climbing, is mid-line attachable with a smooth one-handed descent. Multiple friction settings with a One-piece design with Slic Pin retention. Features enhanced ergonomics and rope friendly edges, an integrated SRS chest harness attachment point and an improved sealed ball bearings pulley. Rope compatibility from 11 to 13mm diameters. Designed by Notch with original inventor Kevin Bingham. Working Load Limit: 286 lbs. (130kg).