Petzl Basic ascender

Petzl Basic ascender. The (non-handled) hand jammer, and integral component of most Frog systems. Generally used as the means of attaching the footloop to the rope The Basic is mechanically the same as the Ascent (handled) jammer - but if you swap from one to the other, consider altering the length of your safety link - the jammer will now be a few inches nearer, or further away, than it has been! Works on most ropes (even muddy or icy) of 8 - 1mm diameter.Simple to attach to, and detach from, ropes - but designed so as to be very difficult to make it come undone by accident.Like the Croll ascender, this product is continually being improved in subtle ways.This year's version runs more smoothly, and opens more efficiently, than the last version. Also used to create a pulley-jammer system in conjunction with two karabiners (at least one oval)and a suitable pulley.