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Grivel Lambda HMS Twin Gate Carabiner


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Opposite and opposed.

Grivel's Lamba HMS Twin Gate Carabiner is designed to provide the security of a screwgate without the, well, screwgate. Instead, it offers two gates that open on different axes and in different directions, giving you the safety of "opposite and opposed" in one convenient 'biner. The Lambda's pear-shaped design makes it perfect for belaying and good for building anchors, and it's slightly lighter than most screwgates, too, if you're in the habit of counting ounces.

  • Aluminum
  • Twin gate design
  • Pear shaped
  • Item #GRV000K

Gate Type
twin (wire & bent)
Major Axis Strength
30 kN
Minor Axis Strength
11 kN
Open Gate Strength
9 kN
Gate Opening
24 MB
98 x 70 mm
Claimed Weight
2.4 oz
Recommended Use
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 4


I've used it several times

BD Magnetrons are my go-to for climbing on rock, but I have had issues with them getting blocked by grit (or in one case a spruce needle) and being difficult to manage with gloves when ice climbing. Screw gates aren't affected by grit but can freeze and aren't any easier to deal with when wearing gloves. Thanks to their design, the Lambdas neither freeze nor jam, plus they're burly, can be visually verified as locked, are effectively automatic (like a magnetron or tri-lock), and have a rounded cross-section. I'm not ready to switch over for rock, but I'm sold for ice.

>Rating: 5

Unsung hero of locking carabiners

I've put it through the wringer

Pros: • Simple to use(with little practice) • Light for its size • Not expensive Cons • Silly name • Could be cheaper • On your unluckiest, worst day when the moon aligns with Venus it *might* land just right on just the right shape rock and "unlock" temporarily to be only a normal carabiner. How rare is this? It is more likely your Magnetron will freeze or jam (rare!). Will this ever be the norm for locking carabiners? Probably not. Should it? Yes (IMHO). There is no question I would rather carry these than a typical screwgate. It’s only real competition is the Magnetron. Given the simplicity of the design, the Grivel should become cheaper than the Magnetron. It is stronger (30kN major vs 24 kN) and it’s lighter (2.5 vs 3 oz). You do the math… Uses: belaying, anchor point

Hey Brian, can you write all of our reviews ;) ? This is awesome. Thanks so much for helping out our community.