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Take safety to a new level with the DMM Belay Master 2 Keylock Screw Gate Belay Device. With a plastic gate clip, the Belay Master 2 helps ensure fail-safe closure. This clip also serves the dual purpose of preventing the carabiner from rotating in the belay system, so by the time you’re done setting up the belay, the only safety feature you’ll be missing will be an airbag.

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Here's what others have to say...



  • Familiarity:I've put it through the wringer

This biner has been the best i've owned! i love it. When i climb inside or out i always know that my biner will be locked whether it's someone new or me belaying! forces you to put it on correctly and have a double case for having it locked!!


great biner

  • Familiarity:I've put it through the wringer

Enjoy this biner a great reminder to lock the biner, and fits great with the mammut smart device. A need if you enjoy bringing people out.


Great Belay Biner

  • Familiarity:I've put it through the wringer

I have used this for a couple months now and it is a great biner. Keeps you from side-loading and makes you double-check that you're locked in. A no-brainer, especially for newer climbers who don't have the muscle memory down. Also, the biner seems to hold up well to fast belays/rappels. It should last a while.


The best belay biner there is.

    Ohh the internal debate - 4 stars or 5 stars???? Let me make it clear I absolutely love this biner. I love the fact that you cannot cross load it, I love the fact that the plastic clip won't shut unless the screwgate is done up, I love its simplicity and I love the smoothest action you can find on any screwgate commercially made. (DMM do make amazing screwgates - FACT!!)

    So why 4 stars? The only reason I gave it four stars is because the plastic clip can be detached from the biner and lost. Over the last three or so years that I've been using mine only once has the plastic clip been twisted off the biner when I had it attached to one of my gear loops (maybe I should learn to always clip it fully closed but when I'm not belaying I sometimes leave it simply closed on a gear loop). Luckily, at the time it fell, not only did I notice it had been knocked off but also it fell somewhere where I could pick it up and re-attach it, ie it didn't fall 200feet down a rock face. I have also heard about one guy who had his plastic clip nicked in Camp 4 - not good! I guess the reason DMM manufacture it like this is so that you can take the clip off and use it like a normal biner but I never need that, I have a bunch of Shadows for that. Also when you compare it to a Girdlock, you cant take the metal piece off that - there's no 'semi' dual use for that biner, so I would say you could make the plastic clip a more permanent feature.

    Like I said though - this is an awesome biner and I wouldn't trade mine in for any other (Gridlock or anything). I'm currently thinking about getting one (two?) more to use with a Silent Partner.