DMMZodiac I Beam Keylock Carabiner

A biner with a twist of awesomeness.

From short sport routes to long hauls, climbers dig the easy twist-lock of the DMM Zodiac I Beam Keylock Carabiner. The mechanism is solid and never feels loose or rattle-y. And with 32kN of major axis strength, you can rest assured that your setup is bombproof (well, the biner part is ... double-check everything else, of course). To boost burly points, DMM fully anodized this carabiner for corrosion-resistance too.

  • Reviews
  • Q & A


  • Familiarity: I've used it several times

This has to be the most serious carabiner on the market. It's ratings are ridiculous, 32kn x 12kn x 12kn. It's also lightweight, but rather large, equivalent to the BD Rock Lock, so, more appropriate for anchor building, or using on belays or rappels. DMM has become my favorite for all-things bomber. Between this, and the Sentinel, DMM has bomber lockers covered.

Photo shows a side by side with the BD RockLock for comparison.


Strong, Smooth action Biner

  • Familiarity: I've used it several times

I added a few of these to my rack and love them. They are light weight, have smooth acting gates even with gloves and the 32kn rating gives you piece of mind that your gear will hold up.


    It auto locks well and has not broken.

    Nice and prefect

    • Familiarity: I've put it through the wringer

    This D Carabiner is the most prefect I've never have.It's light and strong,smooth and safe.From wear in gloves in freezing days to hot days with dusty air,it's works prefect!

    Great auto locking Carabiner

    • Familiarity: I've put it through the wringer

    What makes this carabiner 5 star is the jewel like workmanship and the smooth operation of the mechanism. I use this for belaying with my Grigri. You cannot beat an auto locker for safety.

    Sturdy, light, bomber

    • Familiarity: I've used it once or twice and have initial impressions

    Belay, top, bottom, rescue anchors. You will need a couple extra lockers for the trad rack. Solid and lightweight, a welcome complement.

    Specs is missing weight

    Specs is missing weight

    Best Answer

    The weight is 75g on the screw gate and 78g for the other two according to dmm's site.

    What's the difference between quick lock...

    What's the difference between quick lock and lock safe? right now I only use screw gates

    Best Answer

    The quick lock can be opened with just a twisting motion, but you have to pull the sheath up and then twist to open the lock safe.

    Personally I'm a fan of good old screw gates. Or maybe I'm just a starving college student.

    My Go To Biner

      I have a few screw gates but haven't used them since getting the Locksafe version. And I won't go back.

      This is a Definite buy.

      Pretty Nice

        Most locking biners these days aren't much stronger than a quickdraw, but I'm old fashioned and feel quite reassured by the 32kn rating. I also like that they're a decent size. They are pretty light for the strength and beautifully made. The screwgate is smooth and much tighter than my BDs - which rattles a bit. I carry a lot of old DMM gear that still in great nick and it's always been a joy to use.

        Great With Gloves

          I bought two of these with the twist lock gate and they are sweet! These are my first auto locking carabiners and they make me wish I had forked out the extra cash earlier. I bought them to try and make roping up with gloves on easier. Rope goes in and out easily, great product that simply works.