Peter Hennessey wrote a review of DMM Zodiac I Beam Keylock Carabiner on December 20, 2009
Most locking biners these days aren't much stronger than a quickdraw, but I'm old fashioned and feel quite reassured by the 32kn rating. I also like that they're a decent size. They are pretty light for the strength and beautifully made. The screwgate is smooth and much tighter than my BDs - which rattles a bit. I carry a lot of old DMM gear that still in great nick and it's always been a joy to use.