ART SpiderJack 2.1 Dyneema

The ART SpiderJack is a mechanical friction device that replaces a friction hitch on a moving rope system (MRS). This 2.1 Dyneema version is an earlier generation of the SpiderJack, known for smooth tending and adjustable friction.

What it does

On a moving rope system, the friction hitch is what you control your descent and positioning with. A mechanical device like the SpiderJack does the same job without a cord that glazes and wears. Climbers like how it tends slack and how predictably it grabs and releases, especially on long working days.

Being mechanical, it behaves the same from one climb to the next, as long as it is set up correctly and matched to your rope.

If you are moving from a traditional hitch, expect a learning curve. Set the device up on the ground, hang-test it and practice descents low in the tree before relying on it for production work. Many climbers pair it with a micro pulley for slack tending. Because this is an older generation, make sure replacement parts are available and that you have the correct instructions for this version.

Compatibility and safety

Check the rope diameter range and compatible connectors in ART's instructions before use, and confirm the device suits your rope. Inspect the device, the Dyneema components and all connectors before every climb, and retire parts that show wear or damage.

Life-support gear must meet the applicable standard, be used per the manufacturer's instructions and ANSI Z133, and be inspected before every climb. Get trained before using it aloft.