Replacement print head compatible with WorkForce 600, WF-3540, WF-40, WF-7015, WF-7010, WF-3520, WF-633, WF-3541, WF-7520, WF-7525, WF-635, WF-840, WF-7515, and WF-7510 printers.This part is the F190010 or F190030 print head assembly.It is a direct replacement designed to restore printer functionality.Compatible with T42WD, WF-3010DW, WF-3011, WF-3521, WF-3530, WF-3531, WF-3540, WF-3541, WF-545, WF-600, WF-610, WF-615, WF-630, WF-633, WF-635, WF-645, WF-840, WF-7010, WF-7015, WF-7018, WF-7510, WF-7511, WF-7515, WF-7520, WF-7521, and WF-7525 printers. Disclaimer: This is not an part.References to brands or models are used only to illustrate compatibility.