The Easiest Ribbon Loading Experience in the Industry Upgrade your printing efficiency with this genuine Zebra 02000CT11007 Wax Ribbon Cartridge. Designed exclusively for the ZD420 and ZD620 Cartridge-series desktop printers, this system completely removes the frustration of loading traditional ribbon rolls. Package Contents: 1 x Wax Ribbon Cartridge (Black) Mistake-Proof Installation The cartridge can only be inserted one way—the right way. Simply drop the cartridge into the printer, close the lid, and start printing immediately. Smart and Reliable The integrated smart chip communicates directly with your Zebra printer, automatically adjusting settings for the wax ribbon and monitoring usage to prevent downtime. Compatibility Warning: This product is a rigid plastic CARTRIDGE. ✅ Compatible ONLY with: Zebra ZD420C, ZD620C, ZD421C (Cartridge Models). ❌ NOT Compatible with: Zebra GK420t, GX420t, TLP2844, or Standard ZD420/ZD620 Roll Printers. Technical Specifications: Type: Single Ribbon Cartridge Formulation: 2000 Standard Wax Size: 4.33" x 243' (110mm x 74m) Part Number: 02000CT11007