ART Lockjack Sport Basic Size:Suits 11mm-13mm ropes Hot forged I-Beam body provides

Hot forged I-Beam body provides the backbone of this super strong featherweight

3kN - Not PPE

This leg padding is a direct replacement for the original leg loop padding

The benefits of this is that you never have slack in your rope while ascending and it's easier than hauling yourself up

NFPA 1983 Technical Use

ART Lockjack Sport Basic Size:Suits 11mm-13mm ropes Hot forged I-Beam body providesThe 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