Petzl Kootenay PulleyA knot passing pulley is a type of pulley that is specifically designed for use in systems where knots or other obstacles may be encountered in the rope. The pulley has a specialized design that allows it to pass knots and other obstructions without getting stuck, which can be very useful in rescue and hauling operations. The pulley usually has a wide sheave with a groove that is designed to accommodate knots and other irregularities in the rope, and