Compatibility: T0431/T0442-T0444/T0461/T0472-T0474/T0481-T0486/T0491-T0496...

Specification: 1) Adopt the spongeless structure to avoid damaging the printer head because of the cartridge aging.
2) Add two unilateralism valves on the base of primary struction, make sure there is no ink leakage, print spot, Printer head block when printing.
3) The size of refilling hole and venthole are same, matching with our vacuum reill tool properly.