Austri Alpin OvaLock Karabiner
We all know what it is like, who are setting up a quick belay and before you know it you partner is climbing and you haven't checked the screw gate. Well this karabiner is designed for this very faux par.
The intuitive look mean that only a cursory glance will tell you if it open or closed, the moulded fibre glass bar also acts to separate the 2 halves of the karabiner eliminating the risk of cross loading, all without any screwing or crazy finger moves to open it.
Smart, simple and effective.