1020 Carbon steel 1020 material, hot forging molding. The material density division is more uniform. The back CNC processing, the thickness control is more precise, the molding is more sharp. Can make the center of gravity lower and better. Bring perfect ballistic trajectory. Surface double plating treatment, more beautiful, more wear-resistant.The CNC milling surface of the percussion surface, the computer engraving the usga new standard line groove, suitable for the advance or the professional player.