The Cobra King Pro Forged CB/MB Iron set is made out of 1025 carbon steel, a technology that uses a 5-step forging process. The faces and grooves of the irons are CNC milled. Tungsten weight plugs in the toe section move the CG closer to the center of the club face and give the irons more forgiveness and MOI. Distinguished by a non-glare look, the irons feature a Diamonized Black Finish. The finish makes the irons look smaller and is more long-lasting than PVD finishes characteristic in other clubs.