The CMI Rope Jack serves as a versatile Mechanical Advantage tool ideal for pre-tensioning static lines, light lifting, and cabling. Its compact size and lightweight design allow it to be easily carried by climbers, offering Mechanical Advantage during operation.

Features:

• Lightweight and portable for easy handling in high locations.
• Handle length designed to prevent excessive loading, protecting the rope.
• One-person operation intended for single-handed use.
• Operates without pulleys or extra rope, providing a simple and efficient solution.

Cautions regarding use:

• Do not use a cheater bar to increase leverage, as this can damage the tool and pose serious risks.
• Remove the Rope Jack before applying any shock load.
• Avoid using it for heavy or dynamic loads—other tools should be employed for such tasks.

The Rope Jack is designed for use with static ropes of 3/8-5/8" diameters and should not be relied upon for hauling human cargo without an additional progress capture device. While it is approved for life support use under specific conditions, care should be taken to ensure safety.

Testing indicates that a user can generate between 300-800 pounds of force while operating the Rope Jack. However, be aware that high loading can damage the rope. To release a load, pull the handle to loosen the trailing cam, then repeat for the forward cam, training in this process may be necessary.