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  • Mad Rock - Hulk HMS Screw Gate Carabiner - Green
  • Mad Rock - Hulk HMS Screw Gate Carabiner - Black

Current Color

  • Mad Rock - Hulk HMS Screw Gate Carabiner - Green
  • Mad Rock - Hulk HMS Screw Gate Carabiner - Black

Mad Rock Hulk HMS Screw Gate Carabiner


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    • Green, One Size
    • Black, One Size


    13 Reviews


    When you check out the burly strength ratings on the Mad Rock Hulk HMS Screw Gate Carabiner, it's easy to see where the name comes from. Whenever you're not busy hanging your car over a cliff's edge with this locking 'biner just to show off to your friends, you'll find it comes in handy for setting anchors and generally attaching things to each other. Especially things that you don't want to separate, even under 29kN of force.
    • Item #MRC0105

    Tech Specs

    Gate Type
    screw lock
    Gate Opening
    25 mm
    Major Axis Strength
    29 kN
    Minor Axis Strength
    12 kN
    Open Gate Strength
    8 kN
    Recommended Use
    rock climbing
    Manufacturer Warranty
    limited lifetime

    Tech Specs

    • Reviews
    • Q & A

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    Favorite workhorse locker

      This is my favorite workhorse locker, I have probably dozens of them. It doesn't hurt that they are cheap, and they are a screaming deal when they're on sale (lookin' at you!!!) I've never gotten the screwgate stuck under tension which is pretty common with Petzl screwgate lockers.

      Pirana compatible.. stamped 30 kN

      • Familiarity: I've used it several times

      Pirana Descenders have a very short list of carabiners that will fit. This Mad Rock Hulk HMS fits precisely into the hole! Plus, the spine is stamped 30 kN!

      The rich Black Colorway makes me feel like I need to wear a Tuxedo while rappelling. Solid 'biner!

      Pirana compatible.. stamped 30 kN

      Super solid

      • Familiarity: I've put it through the wringer

      I use this biner on a practically daily basis while indoor lead climbing. It's connected to my GriGri, and takes quite a beating. The size is perfect--it doesn't feel too big on my harness and get in the way of my belaying, but it's also not so small it's awkward. It's perfect for having to take in and out of my GriGri several times. Love it and thinking of getting a couple more in green.
      Note: the black does wear off a bit on the areas that are in contact with my belay device, but that's expected. It gives it characters, so I don't mind.

      Best overall locker

      • Familiarity: I've put it through the wringer

      This is my new favorite locking carabiner-- super lightweight, durable, reliable, easy to lock/unlock, big enough to hold everything I need on long multipitch and alpine routes, but not so big that it feels bulky or gets in the way. All around perfect design.

      Rock It

      • Familiarity: I've put it through the wringer

      Gave this as a gift and here is what she had to say: "This is my favorite caribiner of all time! It is light, reliable, easy to use, and it comes in teal. I use it exclusively as a belay caribiner, both inside and outside."


      • Familiarity: I've put it through the wringer

      This is my favorite carabiner. It's really light and strong and the shape makes it really useful while belaying. I like to have it along in case I forget a belay device so that I can just tie a munter hitch around it and be good to go. You can't really do that on the smaller carabiners. Other than that, the gate action is really smooth, the opening and closing mechanism works great, it's cheap, and the black color is sexy. What's not to love? Just wait till it goes on sale and pick one up: you'll be happy you did!

      Good large carabiner

      • Familiarity: I've used it once or twice and have initial impressions

      I had a BD Rocklock previously and this one is comparable in size, it's more heavy but feels more solid. The rating is also higher than the Rocklock.

      The spring action is heavy and may be difficult for people with small hands to operate one-handed.

      Good and cheap standard biner.

      • Familiarity: I've put it through the wringer

      This Carabiner is the standard used at my local climbing gym. It gets used daily by hundreds of noob belayers so you know it can stand a beating. It feels lightweight and is rather large. It is your general use biner.