I love this crimp. Currently have some set on a 22 degree system wall and some on a vertical spray wall. When I first installed it, I couldn't even hang on them on the system wall, now they feel pretty solid--progress!
The 1/2 description is a bit deceptive--between the rounding on the edge and the fact that you can't squeeze your finger pads all the way into the base of the crimp, this feels like about as thin of an edge as possible, despite measuring 1/2 inch.
Super cool holds, and a great value.