Tactical Version with two Aztek Aztek Pulley Kit Tactical Version with black pulleys, rope and Prusiks pulleys, main rope (8 or 9mm), two Prusiks, a travel restrict Prusik. Strength as a system, even with 8mm rope, is 36kN. Here is a compact mechanical advantage system that continually amazes rescuers with its many uses and versatility. Some of the uses are as a pick off, travel restrict, adjustable directional, high directional guyline, high angle attendant tether, high angle litter scoop, load release hitch and much more. Both Aztek pulleys have their own color-coded Prusik and can be easily activated or deactivated. This means you can have the ratchet at either the top pulley or the bottom pulley. The special 3 on 2 Prusik cannot come off the rope, so the deactivated Prusik will stay ready to be used as soon as you need it. Complete systems from our dealers use sewn Prusiks and a sewn eye on the main rope, which makes things neater and more compact than knots. You cannot appreciate how smooth and easy use of the Prusiks is until you experience it. Because the Prusik only sees a fraction of the total load in an MA system, they don't get too tight and they are easy to release and very controllable. This system grew out of extensive use and experimentation of small MA systems by Ropes That Rescue. It is light years ahead of anything else. Strength as a system, even with 8mm rope, is 36kN. Breaking Strength (Each pulley): 2 x 9 kN x 2=36 kN Working Load: 2 x 2 kN x 2=8 kN Max Rope Diameter: 8 mm Sheave Diameter: 1.0” (25 mm) Certification: CE ALL BLACK