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Hands-on Gear Review

Trango SuperFly Screwlock Review

Locking Carabiner

Click to enlarge
Price:   $12 List | Sale $8.50 online - 29% Off  —  Compare prices at 2 resellers
Pros:  Lightweight
Cons:  No keylock gate, does not hold many slings and ropes
Editors' Rating:     
  • 1
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  • 5
Manufacturer:   Trango


The Superfly Screwlock is the lightest locking biner on the market. Other than its limitations (listed below) it excels at most applications at a fraction of the weight of most locking biners. Its main competition is the Wild Country Neon, which is about the same weight but comes with the key-lock design that leads to fewer gate snags. The Mad Rock Super Tech Keylock Screw also scored higher than the Trango and costs less ($8 vs. $12). For the ultimate lightweight belay carabiner, check out the Petzl Attache 3D.

View our complete Locking Carabiner Review to see how this product compared to others.

New Updates - August 2016
This locking carabiner has been updated and is now available in a new color. Keep reading to find out more!

RELATED: Our complete review of locking carabiner

Compare Side-by-Side

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Analysis and Hands-on Test Findings

Review by:
Chris McNamara
Founder and Editor-in-Chief

Last Updated:
January 18, 2010

New Color 2016

The Trango SuperFly Screwlock has been updated and is now available in a new orange color. In addition, the locking carabiner now weighs 45 g and retails for a lower price of $8.50.

Check out the side-by-side comparison below, with the newest version pictured on the left and the older model shown on the right.

Hands-On Review


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.


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.


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.

Other Versions

Click to enlarge
Trango SuperFly
  • Wiregate carabiner
  • Fairly light, but still easy to handle
  • Snappy clipping action
  • Notch makes cleaning more difficult
  • $8
Chris McNamara

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OutdoorGearLab Member Reviews

Most recent review: January 18, 2010
Summary of All Ratings

OutdoorGearLab Editors' Rating:   
  • 1
  • 2
  • 3
  • 4
  • 5
Average Customer Rating:     (0.0)
Rating Distribution
1 Total Ratings
5 star: 0%  (0)
4 star: 0%  (0)
3 star: 100%  (1)
2 star: 0%  (0)
1 star: 0%  (0)
Sort 1 member reviews by: Most Recent | Most Helpful
Write a Review on this Gear

Jan 9, 2010 - 01:45am
msiddens · Climber
A VERY light locking biner, still though I prefer the keylock I-Beam design of the DMM Phantom at a hair more.
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