NEW Print Head for Zebra GK420D GX420D ZP450 ZP550 Printer 203dpi 105934-037 Condition: new and genuine, 90 days warranty What in box: 1x thermal printhead (105934-037) Compatibility: for Zebra GK420D GX420D ZP450 ZP550 Printer 203dpi Shipping: 7-15 (economic) or 4-8 (expedited) working days to US Item usually will be shipped within 24 hours after payment, except weekend and holiday.