It's made of PLA, printed with 6 perimeters (2.4mm wall thickness) the front of the design is almost solid plastic (very little infill). It is probably to much and it would be fine with 3 or 4 perimeters. There is one test print I tried to break by using on as a lever against the other, I couldn't even damage it.
Yea and if you print this yourself and want better failure on force just add supports in-between the structure to kinda snap in half if it presses to hard