Robertson Zip Line Trolley - Cable PulleyThe SR-71 is a verified proformer for zip line operations. The 2009 design is designed from .101 thick 304 stainless steel. As opposed to the competition it is assembled using machined axles which may possibly cost far more but give the SR-seventy one zip trolley unparalleled structural integrity. Safe practices is often a primary goal, and the SR-seventy one zip trolley makes use of an added back up bolt really should there ever be a catastropic failure throughout use. The sheaves are situation hardened to a 56-fifty eight Rockwell and spin on ball bearings to provide superb wear traits in tough out of doors enviroments. Built to accept two carabineers at the attachment stage for added wellbeing. Breaking power 19,000 lbs. (more…)

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