Kurt Z.wrote a review of Black Diamond RockLock Magnetron Carabiner on January 1, 2017
Familiarity: I've put it through the wringer
This is my second Magnetron (my first got swiped). The new matte black finish looks great so keep an eye on yours! I use this locker to belay in the gym. Super-safe. I took my first one on a couple of trad outings. It worked great but I didn't like getting it all scratched up. The release levers are probably a bit hard to manipulate with gloves so I don't use it for ice climbing.