Your nightmares of unclipping biners are over.
You'll feel safe pulling through the crux with Grivel's Sigma Wire D Twin Gate Carabiner clipped to your climbing rope. This bent gate biner has an additional wire gate to prevent accidental unclipping, and it's as easy as clipping standard biners. The twin gate also increases durability, with an incredibly high strength rating for a biner designed for the rope end.
- Unique twin gate design
- Q & A
Easier to secure than standard locker
- Familiarity: I've used it several times
Push (with thumb or index) or pull (with thumb and middle finger) the wire gate open, clip through inner gate, that's it you're clipped, locked, and secure.
No real directional (r/l facing or x-over) limitations, that I've noticed, on single handed clipping, the techniques do have to be modified some due to requirement to open outer gate.
When oriented upside down(rope side of draw) an open outer gate will guide the rope, sling, etc. into the biner.
If the outer gate is released before a rope, sling, etc. is fully clipped through the inner gate, into the biner, the outer gate will hold rope in position. At this point a slight tug will drop the rope all the way through the inner gate.
To unclip, don't get distracted by the outer gate, just open inner gate like any standard non-locking biner (an extra shake or firm flick will ensure you're clear of the outer gate)
Easy to catch/work the gates with even heavy gloved hands, making these ideal for mountaineering teams. (this is less true on the largest Mega, dual solid gates. The Lamda seemed like an all round better belay biner in comparison)
An option for enhanced security at pro even for 3+ person rope team, allowing a bight to be clipped through the gates quickly and single handed (as each climber passes each piece) without stopping to unscrew or release a complex locking mechanism.
This is true of most climbing gear but I wouldn't recommend using them with a partner who hasn't used these before the climb. Think about about the first time you clipped a twist locker. The first few times it just takes a moment longer to work it out. Its so much better to spend that moment on the ground before the climb than while breaking down an anchor when everyone's ready for you to get going.
Innovative and well thought out product so it is hard to complain about price given cost of great engineering and benefit of added safety but.... really its basically a Petzl Spirit with an additional wire gate. An extra $5 per biner (50% increase) seem a bit steep to anyone else?
Compared to other lockers the price isn't really out of range but if Grivel could get this close enough in the price range of non-lockers I think it would receive and deserve overwhelming adoption.
Slap these bad boys on everything!
I've re-upped my alpine draws with these as the rope end biner. No more fear of ropes unclipping!
Takes a second to get used to, but definitely worth the peace of mind.