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Magnetron GridLock Carabiner




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.
Item# BD2102880000ALL1

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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
Hot Forging vs. Cold Forging


We use two different forging methods to build carabiners—hot and cold forging. Each has its benefits and using both allows us to achieve the best possible shape, size and strength for each carabiner’s intended use. HOT FORGING, a process where both the rod stock and forge dies are heated, allows us to “move” the metal, creating more intricate shapes, such as our GridLock and Oz biners.


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 (.83 in)

Recommended Use



  • Climbing Magazine - 2012 Editor's Choice

  • National Geographic Adventurer - 2012 Gear Of The Year

  • Plus X Award - 2012 Seal Of Approval For Innovation, High Quality And Function

  • Red Dot Design Award - 2012 Honourable Mention

  • Urban Climber - 2012 Editor's Choice


Manufacturing the Black Diamond GridLock belay carabiner

VIDEO PROFILE: BD athlete Barbara Zangerl climbing Super Cirill (8a) near Ticino, Switzerland


Rated 4.9 out of 5 by 7 reviewers.
Rated 5 out of 5 by One of the safest out there, IMO Just ordered this the other week and I can't say how much I love it. No biner is foolproof, now but I'm a lot less worried about a rookie belayer cross-loading the biner or forgetting to lock the gate - if it's closed, it's locked. It's easy to use with one hand. For one of the most frequently used pieces of gear, it's totally worth the price. I can't believe I bothered with screwgates for so long. From now on, all my lockers are going to be Magnetron. November 25, 2013
Rated 4 out of 5 by Found a weakness Took on daytrip down Spry Canyon, Zion, 12 raps over the course of the day. Fine sand in the canyon caused 2 problems: 1. locking mechanism would stick shut requiring me to de-glove to use my thumbnail to pry open 2. sandy rope (unavoidable in slot canyons) burned a groove about 1/3 the overall thickness of the beaner I haven't had problems inside or on clean rock/face climbing and in that environment are awesome, hence warrenting the 4/5 rating still, but I was a bit bummed how poorly it performed for technical canyoneering. November 22, 2013
Rated 5 out of 5 by Excellent, no fuss carabiner I was looking for something to get away from double locking spring loaded biners. This delivered. I was a little suspicious because it's so different and looked too easy to use online. Truth is, it is easy to use. It's also very safe as far as I can tell. If your hesitant on getting one, don't be... it's well worth it October 29, 2013
Rated 5 out of 5 by King of Locking Carabiners I bought one of these mostly out of curiosity. I thought it would be just another silly feature. After a recent trip to the Wind Rivers, I quickly realized this biner was awesome! It's so fast to get in and out of on rappels! You just let go of the gate and your locked! No constantly checking to see if your screwgate has once again come unscrewed. You're good to go. The gridlock feature is a two step process to get on your belay loop, but if you leave it there while climbing, you don't have to worry about it again. No cross loading too which is huge! July 9, 2013
Rated 5 out of 5 by Awesome carabiner The best Gridlock Carabiner I ever used. The highest quality and security. First time I saw it I thought that it is not very secury, but as a QA engineer I tried to open it with the rope in all possible ways. It is impossible! Now you should never forgot to screw your screwgate carabiner. It's a little bit expensive against other models, but every $ you spend on this carabiner worth it! June 21, 2013
Rated 5 out of 5 by Magnetron Gridlock Carabiner I first used the Gridlock Magnetron on a trip to Red Rocks last fall and loved it! A brilliant idea whose time has come. Solid and secure locking mechanism, which is easy for climbers with a smaller grip to operate with one hand. Eliminating the potential for cross loading is also genius! May 20, 2013
Rated 5 out of 5 by Awesome Owned a regular GridLock for a while now, and whilst I didn't think it could be improved upon, the Magnetron has proved me wrong. Features all the pro's of the original Gridlock (excellent belay radius, never cross loads or inverts) and adds more. The new gate closure is super easy to use, and impossible to not do up - no more forgetting to screw the gate up. Furthermore, its far easier to use than a screwgate whilst wearing gloves, and didn't freeze up once throughout the entire Welsh winter season. However, it is still fiddly to initially align, but that is a problem will all anti cross load carabiners. Its also quite expensive, but don't let either of these minor misdemeanour's put you off, this is an awesome carabiner. A that's saying something - its never usually a piece of kit to get excited about. May 8, 2013
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