... rolling, stamping, mouth-narrowing/broadening, hole/bore-making, surface-grinding, mouth-broadening, mouth-shrinking, bending,sharpening,and shaping ... :A. Top quality ,best price,delivery in time and good after service.B. It's made of aluminum alloy ... C. Equipments: CNC machines, bending machine, Automatic spark machine, line cutting machine, shearing machine,etc. D. Surface treatment: Anodizing, ...