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Rugged and tough, a great companion for your gravity-defying adventures.

The DMM Aero HMS Keylock Carabiner makes a hearty companion for climbers who are gear- and toughness-oriented. The Aero HMS boasts strength axis ratings of 25kn, 10kn, and 10kn, with a 7075 gate sheath and inward gate force resistance of 6kn for extra safety. It’s not only about strength with the Aero HMS though; the keylock nose also has an anti-snag lip so that when you’re rigging for a rappel, you don’t have to worry about rope issues.

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Here's what others have to say...


Flips around like crazy.

    I bought this when I retired my old BD HMS biner. This thing flips around like crazy when you are belaying, and always wants to settle into a cross-loaded position - much more than the BD biner I had previously. Also, it seems to be wearing where the rope hits it while belaying much quicker than my BD biner. Just buy a Rock Lock.


    Best belay carabiner on the market

      I got the screwgate option and it works VERY smoothly and doesn't get jammed like some other biners. Overall exceptional quality and functionality, it has a good size to it, not too small but not huge. If your looking for your next belay carabiner to keep on the front of your harness this is the best there is.