Red Star is 100% compatible ink and the properties such as specific gravity, viscosity, surface tension, & color tone are same as original. Remove/peel the sticker on top of the cartridge, take ink in the syringe, just fill it and paste the sticker back. Red Star is perfect for hassle-free refilling & offer sharp, clear, smudge free & long lasting prints. If ink is not coming out properly after refilling, put the cartridge in the suction holder and suck one or two ml ink using the suction syringe. Only cartridge in a good condition can give good prints after refilling. The contents of this kit are cyan -60ml, yellow -60ml, magenta -60ml, black ink -60ml, gloves-2 nos, tissue paper-2 nos, color coded syringe with blunt tip needle – 4 sets, ink suction prime holder – 2 nos, suction syringe- 1no & color identification sticks – 3nos.