The Big-D is an excellent all round karabiner suitable for rock climbing, abseiling and other roping activities.
It’s light weight made from alloy with screw gate for added safety. There’s no way this baby is coming undone if used correctly. That’s good peace of mind when you’re suspended way up in the air with all your weight on it.
On that subject it’s pretty strong too. With 40 kn breaking strain it’s going to take way more punishment than you can give it. Enough to take about 40 – 50 people in weight. Why not grab 6 of them and make a complete set!