Extra Friction Plug:  (7075-T6 hard anodized aluminum.)  A threaded plug that when inserted into the back of the HHxf body provides extra friction to the mechanical and proportional friction component for descent.  (Not to be used during ascent.)  It does so by creating a bend in the rope and putting more friction on the other 2 friction components.  It provides adjustable proportional friction but is not controllable as is the friction hitch.  3D view at

Manual and other information available at www.ClimbingInnovations.com/HHxf

Video links below

The HitchHikerXF Rope Climbing Device

The Hitch Hiker XF by Climbing Innovations LLC

HitchHikerXF Testing