Trango SuperFly Screwlock Review

Likes
This is one of the lightest carabiners out there. It is small but still big enough to use at the anchor or with a belay device. It excels on alpine climbs where every ounce counts.

Dislikes
There are no major dislikes other than we wish it had a key-lock gate. All the other low scores are due to it just being a small carabiner (it doesn't hold many knots, is not great for belaying a second, etc). We feel comfortable using it just about anywhere because we like lightweight biners so much. But if saving weight is not the most important thing to you, there are a lot of other great carabiners available.

Best Application
Any time you are obsessed with weight, as with alpine rock climbing, this biner excels. I use it for nearly every locking biner application except for the following, where I use a pear-shaped biner like the Petzl Attache:

• belaying off the anchor or with a tube-style belay device.

• attaching to a Petzl hauling device.

• attaching the haul line to a haul bag.

Value
This is at the high end of lightweight carabiners for cost. It is the same price as the Wild Country Neon and much more expensive than the Mad Rock.