Mad Rock Ultra Tech Twist-Lock Carabiner
95 mm x 55 mm Gate Opening 18 mm
Here's what other sites are saying:
The Mad Rock Ultra Tech Twist-Lock Carabiner rarely gets bent out of shape. In fact, thanks to humongous strength ratings, it would take a lot to bend this locking biner at all. If you want the convenience and safety of twist-lock without the extra weight, fret not: the Ultra Tech weighs in at a slim 57 grams.
The MadRock twist lock carabiner features the forged I-beam construction and no snag gate.