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GridLock Magnetron Carabiner

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Our innovative belay biner featuring Magnetron Technology, which uses magnets in the gate and a steel insert in the nose for unprecedented security and ease of use. READ MORE
Item# BD2102920000ALL1

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Our innovative belay biner featuring Magnetron Technology, which uses magnets in the gate and a steel insert in the nose for unprecedented security and ease of use. Learn More


Combining maximum security and ease of use like never before, the Black Diamond Magnetron GridLock uses the power of magnets to reinvent the auto-locking carabiner. Magnetron Technology uses two magnetic arms in the gate and a steel insert in the carabiner's keylock nose to create an ultra-secure, self-clearing and redundant locking mechanism that can be easily used with either hand. Combine that with our innovative GridLock shape, which traps the belay loop to eliminate cross-loading, and the Magnetron GridLock is the ultimate belay carabiner.

  • Hot-forged construction
  • Innovative gate design uses two magnetic arms in the gate and a steel insert in the nose for super-secure, interference-free closure
  • Keylock nose prevents snagging
  • One-hand operable
  • Unique shape isolates belay loop to eliminate cross-loading
  • I-Beam spine transitions into a rounded, large rope-bearing surface
  • Type H or HMS connector. For dynamic belaying using a Munter Hitch or belay device.

Tech Specs

Weight :   78 g (3 oz)
Closed Gate Strength :   22 kN (4,946 lbf)
Open Gate Strength :   8 kN (1,798 lbf)
Minor Axis Strength :   7 kN (1,574 lbf)
Gate Opening :   21 mm (0.83 in)
GridLock Magnetron Carabiner is rated 4.8 out of 5 by 6.
Rated 5 out of 5 by from Cool belay carabiner Have had it about a month. The magnetic locking gate works flawlessly
Date published: 2018-03-24
Rated 5 out of 5 by from My Favorite Triple Action Locker I don't use this carabiner for belaying. It's strong in that role, though I find the belay loop capture fiddly when moving between climbs. For my use, the GridLock/Magnetron design really shines when connecting a climber to the middle of the rope with a cowtail--a maneuver that normally requires two lockers opposite and opposed to minimize the possibility of cross loading. A single triple-action, captured-loop carabiner can safely achieve the same effect, and the GridLock Magnetron enables this with a minimum of fuss. It's a dedicated piece on my instructor rack that provides a quick, professional solution and doesn't look MacGyvered.
Date published: 2017-10-28
Rated 5 out of 5 by from Top product ! I really love belaying someone with the GridLock Magnetron. Try it out and you will never go back !
Date published: 2017-09-10
Rated 5 out of 5 by from Good security The grid is perfect, no need to worry about the carabiner. Not that quick to unlock if using a GriGri, but you get use to it
Date published: 2017-06-14
Rated 5 out of 5 by from Favorite Belay Biner This carabiner is by far my favorite for belaying. The magnets are fail-safe, and having my belay loop separate from my device gives me so much piece of mind! Pros: -Will never cross load if set up correctly -Easy to use, doesn't take much time. (Unlike screwing and unscrewing a traditional gate.) -Looks cool! (Mine is silver with the blue magnets) Cons: -The lockout part of the arm is great, but if you do have someone belay on it who loads it wrong it WILL break. The first time. Immediately. This is what happened to my first one and I bought another because it is so good!
Date published: 2017-02-13
Rated 4 out of 5 by from It works, but awkward I'm very excited for this stealthy looking addition to my rack! Pros: - It is almost impossible to stop it locking when you remove your hands (hint: squeeze the magnets into their beds when the gate is open to make the carabiner lock gate-open) - Nice to save time on screwing in the gate - It looks cool - Definitely stops cross-loading Cons: - Because it's so good at locking, it's quite awkward to get the belay loop into the protected section. It's also awkward to get the rope into the belay device - you end up unlocking it three or four times to set up a belay - Heavy - Not smooth and round for the rope to run over (e.g. vs Petzl Attache) - Not useful as a general biner
Date published: 2016-11-09
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