ART Lockjack Sport with Swivel Size:11-12mm / 12-13mm comfortable and well ventilated thanks

comfortable and well ventilated thanks to 10 air intakes that keep the head cool at all times

Air storage insulates and cools

Course screen has 16 notches / cm²

Treegears Take

easier to pull from the ground

ART Lockjack Sport with Swivel Size:11-12mm / 12-13mm comfortable and well ventilated thanksThe 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