Printer model: Ricoh GX7000/GX3000
Cartridge Model: GC21BK, GC21C, GC21Y, GC21M
1, GC21 refillable cartridge with ARC Chip for RICOH GX7000, GX5050, GX3000, GX2500 Printer. so, it is economical and conveneint
2, refillable cartridge with big refill hole. useful, goodlooking, convenient
