The SB-1 irons from Scratch are forged from the same soft 1018 carbon steel, to provide the softest irons yet. These irons are specifically designed with the CG in the center of the club face for maximum playability and forgiveness from a muscleback design. Completely made and finished by hand, these irons are some of the best in the world. The SB-1 irons are customizable and come in 3 different grinds. Driver/Slider Grind: - Moderate Angle of Attack - Classic "Dollar Bill" Divot - Typical Mishit: Thin and Fat - Medium Effective Bounce