Black Diamond RockLock Screw Gate

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Black Diamond’s largest belay and rappel locker, the Black Diamond RockLock carabiner features a keylock nose, is Munter Hitch compatible and 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
  • Screwgate sleeve

Weight : 85 g (3 oz)

Closed Gate Strength : 24 kN (5395 lbf)

Open Gate Strength : 7 kN (1574 lbf)

Minor Axis Strength : 7 kN (1574 lbf)

Gate Opening : 21 mm (0.83 in)

Specs Chart

Weight 85g
Major Axis (kN) 24
Minor Axis (kN) 7
Open Gate (kN) 7
Gate Opening (mm) 21
UPC / Barcode 793661287094
Brand Black Diamond



Rated 5 out of 5 stars. (8 customer reviews)

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Great BIG biners. No good for belaying though.

20 December 2014
The biners are great. Not too heavy, yet big. They lock nicely in one push of the thumb. When attached to the harness they often turn around though. Best for anchors.

Does exactly what it says on the tin

28 May 2014
As you'd expect from Black Diamond, this carabiner is functional, well made and a pleasure to use. Do try it.

Above average locker

21 May 2014
Bomber, if a little heavy.

great anchor biner

5 January 2014
nice big solid biner. great for setting up top rope anchors or using as the biner on your daisy. just bomb proof!

good giant locker

24 December 2013
This thing is huge! I often use it as the anchor masterpoint, because it's so big that you can easily clip a bunch of gear to it and a party of three climbers. It's a really useful and great biner. The main drawback is that it is much heavier than other slightly smaller lockers, such as the BD vaporlock.

good solid first biner

27 November 2012
good solid light cheap biner with a very smooth gate action

Large and light

18 May 2012
Despite the size of this workhorse, it is surprisingly quite light. Ideal for the larger abseiler. Plenty of room for clipping on and smooth gate actions make this one a great addition to your collection. We often use this for belay work too.

Excellent carabiner

14 June 2011
I purchased the twist gate and its Great, very smooth locking device and feels nice and strong. over all its an excellent carabiner.