Skunk2 Valves are made of Swirl Polished Stainless Steel and feature a dished head for added weight savings and less added compression. They also offer a flat face high compression valve as well. Just let us know which one you want. Ask us about a Combo Package Deal for Cam Gears, Cams, Valvesprings, Retainers, and Valves. Skunk2 has been on the market for years and has earned their reputation for making high end engine components. Skunk2 offers top of the line Cams and Valvetrain at a reasonable price.