ART Lockjack Sport Basic Helmets A smooth locking carabiner with

A smooth locking carabiner with key lock gate

The Rope Wrench is the limb that goes with you

or fewer holes for less friction

62% polyamide

and is hard-coated for extended wear

ART Lockjack Sport Basic Helmets A smooth locking carabiner withThe Lockjack was the first piece of hardware on the market that could totally replace the friction hitches used on climbing lines. Like a Mechanical Prusik, the Lockjack works as both an ascender and as a descender in the doubled rope technique (DdRT). The advantage of the Lockjack is that friction is applied to the rope with a smooth aluminum surface which causes less friction while climbing for an effortless advance, and a smoother more easily