Petzl CHICANE Auxiliary Brake for Mechanical Prusik Truss Couplers The Lower Hook Nut is

The Lower Hook Nut is installed between the Lower Hook Chain Block and Lower Hook Block Washer

three small flexible ones in back that will not interfere with wearing a backpack

Pre-drilled holes make assembly and mounting easy

Resets to Zero with one turn of knob

The I’D® L Descender is also available black

Petzl CHICANE Auxiliary Brake for Mechanical Prusik Truss Couplers The Lower Hook Nut isDESCRIPTION SPECIFICATIONS FEATURES VIDEO + RESOURCES Petzl CHICANE Auxiliary Brake for Mechanical Prusik The Petzl CHICANE Auxiliary Braking Device allows ZIGZAG and ZIGZAG PLUS mechanical Prusiks to be used on single ropes. It provides continuous additional friction on descents. The CHICANE is used with an Am'D or OK connector (not included). The H shaped cross section of the connector, together with the positioning ring of the mechanical Prusik,