Black Diamond GridLock Belay Screwgate Locking Carabiner

Priced: $19.95 Rated:   - 4 stars out of 5 by 11 reviews.
Black Diamond GridLock Belay Screwgate Locking Carabiner
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Color: Platinum
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Black Diamond GridLock Belay Screwgate Locking Carabiner -

The hot-forged Black Diamond GridLock Belay Screwgate locking carabiner has a patent-pending design that keeps the 'biner properly oriented while you're belaying.



  • Screwgate sleeve locks the Black Diamond GridLock Belay carabiner


  • Hot-forging process allows the metal to be moved around and formed into intricate shapes; these shapes can ease handling and reduce weight
  • GridLock design keeps the 'biner properly oriented on your belay loop to avoid cross loading
  • I-beam spine transitions into a rounded rope-bearing surface for smooth belaying and rappelling
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Average Price History: Price History
Review RatingNumber of Reviews
Carabiner type:Locking carabiner
Gate open clearance:21 millimeters
Gate type:Screw-lock
Strength major axis closed:22 kilonewtons
Strength major axis open:8 kilonewtons
Strength minor axis:7 kilonewtons
Weight:76 grams
Compare specifications to related products.

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Black Diamond

Black Diamond GridLock Belay Screwgate Locking Carabiner Reviews:

Positive Reviews:

excellent, except for two things.

I love this carabiner! Thanks Black Diamond!
the only things i think it lacks are
1.) make a twist-lock version!
2.) if you dont get the belay loop into the small opening by mistake, and it "Flipps" while belaying, the rope is now running on the outside of the spine-keeper thing and can get stuck or is running over a sligntly sharp edge! Make sure the
belay loop is inside the smaller area! BD could make this spine a lot smoother just in case this happens, or make that little spine "spring loaded".
will dodge at REI on 04/04/2011

Must have

I was having issues using a normal Carabiner with an ATC Guide and GRIGRI at times; crossload. So to be a better belayer and to be SAFE, I got this product.

It's very lightweight and easy to use, but I found using a grigri the normal way could lead to crossload. To avoid this, I flipped the gridlock around so the grigri is in the narrow area.

Other than that, it is a must have but wish it was autolocked.
Where is Chris at REI on 07/07/2012

You Can't Just Buy One

Got this bad boy for belaying... Loved it so much, got another to attach to my personal anchor. It's great that one end of the carabiner can be designated for only one task.

It's 100% for the personal anchor and about 95% for a belay carabiner. The only issue I have with it as a belay carabiner is that getting the belay loop out of the bottom part of the biner can be a wee bit tricky.
aastigger at REI on 08/08/2011

Great light solution

Thought this was a gimick until I handled one. Over all it is smaller and lighter than the BD Rocklock. The added safety is a great bonus to traditional lockers, and much lighter than other brand's solutions.
With that said after using it for a month I will not take it alpine climbing because it adds to the potential of accidentally dropping your belay device and/or opening on your harness.
jonnymtman at REI on 04/04/2011

Great Biner!

Found this just browsing around and thought i would give it a try. I am not disappointed in anyway. Its simple and easy and stays correctly orientated. Takes away the fear of cross loading. All the weight stays on the spine which i love to have for my biners. Locking this has been easy an so far no problems. Overall an amazing biner.
Gloves at REI on 04/04/2011

Best Belay Carabiner Yet

This is the best belay carabiner design I've ever used. It stays perfectly centered and is easy to use. I spend a lot of time solo climbing. Combining the Gridlock with a Petzl minitraction provides maximum security and a great feel when top roping alone.
Duane Idaho Climber at REI on 04/04/2011

Extra step, reap the rewards

I feel like a fool as everyone watches me fiddling around trying to setup to belay, opening, reopening the gate, over and over again to get everything where it needs to be, but in the end, my climber knows he/she's got a bomber belay.
ROCKofGLOVE at REI on 04/04/2011

Sweet'n simple!

Other manufacturers have done this in a much bulkier and heavier manner. Black diamond solves this obvious age-long problem with a bit of simple, intuitive, lightweight innovation.
nwmaleactionfigure at REI on 03/03/2011

Great addition to rack

I great belay/rappel biner
sg29651 at REI on 04/04/2011

Negative Reviews:


I was very excited to purchase the product. I thought the concept of the carabiner that wouldn't cross load was fantastic. Using it for the first time, I was very disappointed to find how non-user friendly this carabiner was. It took a great deal more time to set up my belay, made me nervous about dropping my grigri, and overall didn't sit right with me.
summitboarder at REI on 12/12/2012

Neutral Reviews:

Not sold on it

I found this tedious to set up, especially on larger belay loops. I definitely ditto the comments about alpine/multi-pitch climbs and the increased likelihood of dropping your belay device. 4 People called it simple, but it is not simple compared to a regular belay 'biner. I'd like to try the DMM set up and wish REI carried it.
traverpen at REI on 12/12/2011