PETZL ZIG ZAG MECHANICAL PRUSIK arborplex What does "lockable open" mean

What does "lockable open" mean

The H-Style Full Body Harness features a web dorsal loop attachment

Replacement Pole Gaffs: 1-5/8" length

The handy front snap keeps your gear organized and within reach while you work

PETZL ZIG ZAG MECHANICAL PRUSIK arborplex What does "lockable open" meanith the axis of the worker and optimize grip. The ZIG ZAG Mechanical Prusik allows the user to move around efficiently in a tree using classic Prusik pulley system technique. The linked rings provide precision and fluidity when moving around. The pulley is mounted on sealed ball bearings to allow the slack to be taken up easily. The steel construction offers great durability. Petzl recommends the Petzl OK Carabiner to use with the ZIG ZAG Mechanical