This Pro-Tip video demonstrates a knot pass on a lower through a CLUTCH using an AZTEK. The AZTEK is an extremely versatile tool to complete a knot pass through a system. The AZTEK can be used for a knot pass on a raise or lower and can be used on a Twin Tension Rope System (TTRS) or a Dedicated Main/Dedicated Belay (DMDB). In this video, the team demonstrates how to perform a knot pass using an AZTEK on a TTRS lowering system with dual CLUTCHes.