Petzl, AMD Carabiner, Triact-Lock

Very light. Clean nose. Easy screw lock.

great tool for climbing safety

I love the ball locking carabiners. They are easy to open, but impossible to open accidentally

Good size, versatile.

Well constructed, works great, love the red danger mark.

I use carabiners primarily for vertical caving, both for myself and as a trip leader for others. Although I think it’s of paramount importance that everyone doing vertical caving has personal knowledge of how to use their gear, including carabiners, there are situations where more foolproof carabiners such as this would be useful. Some examples include a) rigging (for security, as it can’t inadvertently open) b) theft prevention (since it is an uncommon carabiner and needs a pin to open), and c) inadvertent opening (for carabiners you definitely don’t want to open accidentally, or when used on a beginner or for example a group of scouts). It isn’t fullproof by any means however, as the unlocking pin is simply that, a pin. Any tool thin and long and solid enough could open this, even a pen, or a belt buckle. Something like this with a tiny actual key hole would serve some of these purposes better. As currently designed it can be stolen without the tool and dangerously opened without the tool by someone foolish enough to do so.

The only carabiner I own.

Workmanship, ratings esp max breaking strength , physical appearance, locking mechanism all make this a great product.

Works perfectly. Already in use for fire and rescue service

very good!