Specifications: Suit to printer: C79 / CX3900 / CX4900 / CX5900 / R270 / R390 / R260 / R380 / R265 / R360 / D78 etc. Suit to Cartridge: T0731 / T0732 / T0733 / T0734; T0821 / T0822 / T0823 / T0824 / T0825 / T0826; T0781 / T0782 / T0783 / T0784 / T0785 / T0786; T0801 / T0802 / T0803 / T0804 / T0805 / T0806;T0711 / T0712 / T0713 / T0714 etc. Advantages: 1. Adopt the spongeless structure; avoid breaking the printer head because of the cartridge aging.2. Innovate it base on the first generation cartridge, make sure not to leak ink, print spot, and block when printing. 3. The refilling hole and the air hole are the same; match with our vacuum refill tool is more convenient, concision. Take out the rubber plug when use the cartridge. producing area:China