INKMATE 4 Pack GC-41 Transfer SUB Pigment Ink Cartridge for Ricoh GC41 Compatible with Ricoh Aficio SG2100 SG3110DN SG2010 1.Contents: 1 Pack Black x 1 Pack Cyan x 1 Pack Magenta x 1 Pack Yellow. 2.Cartridge with HEAT TRANSFER SUB ink, high capacity, high yield compatible show ink level ink cartridges. 3.All products covered by a 100% satisfaction guarantee and 90 days warranty. 4.Compatibility List: Ricoh IPSiO SG3100, IPSiO SG2100, IPSiO SG2100L, IPSiO SG2010L, Aficio SG3110DNW, Aficio SG2100N, Aficio SG3100SNW, Aficio SG3110DN, Aficio SG3110DNW, Aficio SG3110SFNW, Aficio SG7100, Aficio SG7100DN. 5.Two holes: the bigger one is a refill hole, please do not open; the smaller one is a vent hole, vent hole must be opened status after installation.Chips are one-off, please do not try to refill into ink.