DeChambeau prefers a simple shape in his irons with plenty of leading-edge bounce and some offset at the hosel, Schomin said. Interestingly, according to DeChambeau and Cobra, the prototype irons are 3D-printed (rather than cast or forged, the two traditional methods of making irons).
https://www.golfwrx.com/664484/bryson-dechambeau-testing-new-3d-printed-cobra-irons/

