Enjoy ultimate scratch resistance with this 9.5 inch Diamond Fry Pan! It features a black diamond coating and is made of extra-thick forged aluminum. It also boasts Starfrit's patented Rock.Tec manufacturing process. This unique surface treatment uses small pellet impact technology to strengthen and densify the surface of the cookware. This treatment is not a coating but a process that permanently alters the surface, ensuring optimal application of the non-stick coating.