Independent arborist gear picks · Typical prices shown, checked at the retailer

Representative photo for Big Jim's Hitch Breaker Eye & Eye Prusiks

Representative photo. Check the retailer listing for the exact model, color and size.
Photo: Hot day in technical rescue training by Grand Canyon NPS, CC BY 2.0

Big Jim's

Big Jim's Hitch Breaker

A small tending aid for climbers who want a friction hitch that releases cleanly.

$45 Typical price. Retail prices change, so check today's price before you buy.
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  • Gives you a firm handle for breaking a loaded friction hitch
  • Helps keep the climbing hitch dressed and tended while advancing
  • Works with common eye-and-eye hitch cords
  • Small and light enough to live on your climbing system
  • Simple, no-moving-parts design that is easy to inspect

Climbing

Big Jim's Hitch Breaker is a compact tending aid that sits at the base of your friction hitch and gives you a solid point to break and release it. Climbers use the hitch breaker to make descents smoother and to keep the climbing hitch dressed and tended as they advance up the line.

What a hitch breaker does

Every friction hitch climber knows the moment: you have been sitting in the saddle, the hitch has bitten down hard, and now you need to move. Grabbing the top of a Distel or VT and pulling it down works, but it is fiddly with gloves on and it can lurch. A hitch breaker gives you a dedicated, rigid point at the base of the hitch to pull against, so the release is more gradual and controlled.

It also helps the hitch keep its shape. When a climbing hitch is tended from below, it stays dressed and is less likely to roll or creep out of position as you advance. That means less time re-dressing cord and more time working.

The breaker is not a replacement for a properly tied, properly sized hitch. Cord diameter, cord material, the number of wraps and the rope you are climbing on still decide how well the system grabs and releases.

Because it gives your hand a consistent place to work, the release becomes more repeatable, which is what helps most on long descents where you are feathering the hitch for minutes at a time.

Setting it up

Follow the instructions that come with the device for how it connects to your hitch cord and bridge, and match your cord and rope diameters to what the maker recommends. Build the system on the ground, load-test it at chest height, and check that the hitch grabs fully when you let go before you leave the ground.

If you are switching from a hitch-tending pulley, expect a short learning period. The release feels different, and you may want to adjust the number of wraps or the cord length to get the feel right.

Anything you hang your life on must meet the applicable standard, be used per the manufacturer's instructions and ANSI Z133, and be inspected before every climb by a trained user.

Expect to fine-tune the system over a few climbs. Small changes in cord length or wraps can make a noticeable difference in how the hitch feels when you break it.

Who it suits

It is popular with climbers who run a traditional friction hitch and want finer control on descent without moving to a mechanical device. It also suits newer climbers who struggle to break a tight hitch smoothly, provided they are learning under a qualified trainer.

Pair it with a quality eye-and-eye cord from our eye-and-eye prusiks section, or compare it with a hitch-tending pulley such as the DMM Hitch Climber.

Some climbers also like it for training days, because it makes the moment of release easier to see and explain to someone learning the hitch.

Inspection

Check the device for burrs, sharp edges and grooving where cord or rope runs over it, and retire it if you find cracks or deformation. Inspect the hitch cord at the same time, paying attention to glazing, flat spots and stiff sections that come from heat during long descents.

Wipe sap and grit off the device after use. Contaminants on any surface the hitch contacts can change how the hitch grabs.