The Nitron Screwgate Carabiner is Black Diamond's lightest biner for building anchors on any climbing route whether it's sport, trad, or alpine. Black Diamond designed it with a keylock nose for snag-free convenience when you're cleaning.
Specs: Material: hot-forged Gate Type: screwgate keylock nose Major Axis Strength: 24 kN Minor Axis Strength: 7 kN Open Gate Strength: 8 kN Gate Opening: 22 mm Weight: 1.8 oz Screwgate locking carabiner Snag-free keylock nose
The carabiners are very light and dig the purple screw lock. Dimensions feel the same as the positron so if you don't like the idea of having a thinner carabiner these are pretty nice. While using these I haven't really noticed a significant difference in weight while climbing, granted I don't have that much gear and am not trying to go ultralight. That being said I prefer the value of the positron screwgate (or the 3-pack.