While buying a complete system is highly recommended, the pulleys are available seperately for those building their own system.
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. A tactical version with black pulleys is also available.
Weight: 15.4 oz (436 gm)
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