Printhead Cleaning Cards safely and effectively remove contamination from Dymo LabelWriter print heads. Use once or twice a month, or whenever diminished print quality is experienced. Using cleaning cards improves print quality and extends the life of your LabelWriter.Application/Usage: Printer HeadWidth: 2.3Length: 3.8"Compatibility: Dymo LabelWriter 330 Turbo (68010)Dymo LabelWriter 315 (68025)Dymo LabelWriter 330 (68005)Dymo LabelWriter 300 (68000)Recycled: NoAssembly Required: No"