KF3006-GM50A
KF2004-GM50D
KF3004-GM50B

The GM50 series consists of thick-film thermal printheads designed for high-speed printing. They are commonly used in:

barcode printers,
ticket printers,
terminal devices,
industrial label printer systems.

The differences between these models are usually related to:

resolution (200 dpi / 300 dpi),
print width,
mechanical design,
compatibility with specific printer models.