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Grivel Mega HMS Twin Gate

4 reviews   |  

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The Grivel Mega HMS Twin Gate is a large, unique double gated HMS climbing carabiner that offers a fresh take on locking mechanism technology.

Designed to be used as a replacement for the classic HMS carabiner, the Grivel Mega HMS Twin Gate features the patented Twin Gate system, designed to improve carabiner safety whilst making them quicker and easier to use than the classic screw gate*.

*Although this does take some practise.



  • Gate Clearance mm: 14
  • Gate Closed kN: 27
  • Gate Open kN: 10
  • Keylock: No
  • Minor Axis kN: 10
  • Width Widest mm: 71
  • Length: 102m
  • Material: Alloy
  • Weight: 79g
Customer Reviews
5 Based on 4 reviews
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Filter Reviews:
    Joe F.
    The grIvel mega HMS twingate

    The grIvel mega HMS twingate is an interesting concept - it's as secure as a screwgate but there's nothing to forget to do up. It takes a bit of getting used to, and can be a bit fiddly for a couple of hours, but once you have the technique sorted it's great. It was one fit some belay devices - it can't be used with a grigri for example, but is brilliant twinned with a standard tube type belay. Interesting concept and a great price.

    Richard H.
    This seems to be a

    This seems to be a solid and secure system and relatively easy to operate. When closed there is no movement on the gate and does give you a feeling of extra security imo. Quite impressed.

    Great carabiner, takes a bit

    Great carabiner, takes a bit getting used to but it's definitely worth having.

    James S.
    I bought this just to

    I bought this just to try out. The gates were sprung stronger than I feared. It feels very secure once you get your head around the possible failure modes. The only main one I can think of being dragging along the ground causing the gates to open. It's ex