The original Kootenay knot passing pulley was built by Rock Exotica in the late 80's. Since those days, many have copied the pulley and even used the original name, but none have made as many advancements in the design.
Designed to run the fine line of lightweight and high capacity the Kootenay from Rock Exotica weighs less while offering a higher capacity than larger Kootenay-style pulleys. This unique design simplifies high-strength tie-off with a single locking screw, stowable within the axle. This device uses two independent sealed ball bearings for increased durability and efficiency in addition to the two additional holes which separate tag lines and hoist lines, helping prevent spinning of the load and interference with connectors.