SPIDERJACK 2,1Description Like the SpiderJack 2. 1 Basic but with the DyneemaKit mounted. The Dyneema sling is attached on to the body of the device, so a second carabiner can be adapted for fixing the stationary rope end. The Dyneema Kit allows to change the climbing system much more easily than before, when you switch to different anchor points while climbing. Before climbing, always verify that the ring of the DyneemaKit is connected onto your carabiner!