ART Lockjack Sport Basic Size:Suits 11mm-13mm ropes The ergonomically designed release lever

The ergonomically designed release lever of the Spiderjack features a groove on its inner side giving a redirection of rope

Also certified to NFPA 1983 (2012 ED) Class G

Treegears' Take

Weight: 1250 g

PRACTICAL AND VERSATILE Cutting edge I-Beam body

ART Lockjack Sport Basic Size:Suits 11mm-13mm ropes The ergonomically designed release leverThe 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