Grivel Mega HMS Twingate

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The Grivel Sigma Twin Gate system utilises a fresh take on locking mechanism technology.

This patented Grivel system has been designed to improve carabiner safety, whilst making the biners quicker and easier to use than a classic screw gate they replace*. The Mega Twingate has been designed to use as a replacement for the classic HMS carabiner.

VIDEO: Click the product 'Videos' tab above for more details on 'Twingate' technology and a video demo them in varying uses.

*Although this does take some practise.

  • Carabiner gateclearance: 14
  • Carabiner gateclosed: 29
  • Carabiner gateopen: 10
  • Carabiner keylock: No
  • Carabiner minoraxis: 10
  • Carabiner widthwidest: 7
  • Length textfield: 10cm
  • Manufacturer: Grivel
  • Material dropdown: Alloy
  • Weight: 79g

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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