Black Diamond RockLock

Priced: $9.95 - $17.95 Rated:   - 5 stars out of 5 by 15 reviews.
Black Diamond RockLock
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Color: Mocha
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Black Diamond RockLock -

The Rocklock Locking Carabiner by Black Diamond is their largest belay locking biner, that has a non-snagging keylock nose. Either version is easily operated with one hand.

FEATURES of the Black Diamond Rocklock Locking Carabiner.
SPECIFICATIONS of the Black Diamond Rocklock Locking Carabiner.


  • Keylock nose prevents snagging
  • One-hand operable
  • Slightly curved spine maximizes gate opening
  • Available as a screwgate or twist lock
  • Square hinge end holds belay loop securely in place
  • Always read and understand the warnings and instructions that accompany your gear.**
The Black Diamond Rocklock Twistlock carabiner is one of Black Diamond's largest locking biners. The new Keylock has a non-snagging keylock nose. A slightly curved spine maximizes the gate opening and a square hinge end holds your belay loop securely in place. The Rocklock's large size makes it an excellent choice when using two ropes, wearing gloves, or when using a variety of belaying and repelling techniques. Its large capacity can handle multiple clove hitches at belays. It's easily operated with one hand. –Vendor.

Massey's Outfitters
BD's largest belay and rappel locker, the Black Diamond RockLock carabiner features a keylock nose and is Munter Hitch compatible. It’s available as a screwgate or twistlock—both can be operated with one hand. Square hinge end holds belay loop securely in place.
Slightly curved spine maximizes gate opening.
Keylock nose prevents snagging.
One-hand operable.
Available as a screwgate or twistlock
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Average Price History: Price History
Review RatingNumber of Reviews
Carabiner Size:Standard
Closed Gate:24 kN
Closed Gate Strength:5.395 lbf / 24 kN
Gate Opening:0.83" / 21 mm
Major Axis kN:24 kN
Minor Axis:7 kN
Minor Axis Strength:1.574 lbf / 7 kN
Minor Axis kN:7
Open Gate :7 kN
Open Gate Strength:1.574 lbf / 7 kN
Open Strength kN:8
Opening Diameter:22 mm
Weight:3.1 oz / 89 g

Similar Products:

Black Diamond Rocklock Screwgate CarabinerBlack Diamond Rocklock Screwgate Carabiner$7.49 - $10.95
Black Diamond Magnetron RockLockBlack Diamond Magnetron RockLock$18.74 - $24.95
Black Diamond Rocklock Twistlock CarabinerBlack Diamond Rocklock Twistlock Carabiner$14.95 - $17.99
Black Diamond Rocklock ScrewgateBlack Diamond Rocklock Screwgate$7.97 - $24.95

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Black Diamond

Black Diamond RockLock Reviews:

Positive Reviews:

This was my primary belay carabiner until I discovered the Gridlock. Mine is the screwgate rather than the twistlock.
The Good:
--It's huge; if it can't fit what you need to feed through it you should probably reconsider what you're hanging off your carabiners.
--Solid, smooth, reliable gate action and a locking sleeve that resists the sandy goodness found at so many crags.
--Super smooth belaying.
--Easy to slide ropes, hitches, runners, etc., around the spine thanks to a smooth profile.
The Bad:
--It's quite large. So large that it can be a liability at space-tight anchor bolts. For those I prefer the Positron Screwgate.
Overall a great carabiner. Between this and the Positron locking 'biner there's not much you can't do.

Michael Nies at on 11/01/2013

For the price, you can't beat this biner for what it brings to the table. The screwgate spins cleanly and its a sturdy beast.
That said, it is relatively easy to crossload while on belay if you aren't watching your gear, especially on routes that create slack then create loads. I have also had the screwgate loosen on me once as well, so now I make sure to torque it down before giving the thumbs up.
Overall pretty good, could definitely do worse.

Nate at on 11/16/2013

These biners are the standard. I use them for anchors, belays, whitewater taglines, live-bait rescue tethers, even carrying my keys when I have to retire one. Don't expect it to excel at anything, they weren't built for that. They were made to be the majority of lockers on your rack, not all of the lockers. They are great, inexpensive biners for setting up systems and no rack is complete without a dozen.

Sam G at on 12/15/2013

Wayyy better then the triact-lock biner or any with a 3-point lock system! Easy to open and good size. Usually it's kept on my harness as a belay biner but could be used on directs, I don't just for added safety. Strong, reliable, big gate, good size. Overall my favorite twistlock bener out there

Reed at on 11/15/2013

If you are looking for an all around good locker then look no further. For the price this locker is fairly good. No complaints yet with it but then again I usually just use it for an anchor so I don't get to see it in action all that often.

Michael Denman at on 11/27/2013

If you want an extremely useful, just the right right size, relatively cheap, and one you continue to buy time after time, buy this locking carabiner.
The size is great, big enough to clip multiple things for multipitch and light enough to bring a second.
Can't beat it.

David Tennant at on 09/24/2013

This carabiner has a very nice smooth gate action with just the right amount of tension. The screwgate works flawlessly. I have enjoyed using it and haven?t looked back since adding it to the rack! Great for setting up belay or anchor system.

Curtis Coomes at on 09/18/2013

greast carabiner to use as the center point of the belay station, or to use with and ATC or reverso as the round edges helo the rope move better
not the lightest, not the heviest

Patricio Berra at on 11/06/2013

I've been using this biner for many years and Is always my go do to locking biner. It is affordable and dependable! Get it know while it is on sale!

Jeff Guest at on 11/04/2013

Locking is smooth and easy to open/close. Bought this with the screw gate for belaying. It has lots of room and works great. Good value too!

Pete Schaefers at on 11/21/2013

Neutral Reviews:

Big locking biner. Use them exclusively for top rope anchors due to how cumbersome they are. Would not use them for much else.

Patrick Hart at on 12/12/2013