Specifications: Introducing the world\'\'s first inkjet auto refill system, an entirely new innovation to the inkjet cartridge refilling market. Worldwide patents have been filed for this unique technology. Simply drop in your cartridge, press a button and let the auto refill system do the rest. It\'\'s economical, easy and absolutely stress free. Ideal for home & office use. Available models: 1) HS-45 for use on HP 51645(hp45 ), HP 51640a/92261a(hp40 ), HP C6615an/dn (hp15) cartridges; 2) HS-29 for use on HP 51629 (hp29), HP C6614 (hp20), HP C6628 (hp19); 3) LX-50 for use on Lexmark 12A1975 & 12A1970 cartridges; 4) LX-70 for use on Lexmark 17G0050 & Sharp AJ-C50B cartridges; 5) HS-56 for use on HP C6656 (hp56), HP C8727 (hp27). Features: - compact in size - electronically operated (dc with adapter) - one-touch refilling - recycle used cartridge - environment friendly : go green - mess free - stress free - save time - save money: Each refill cost only a fraction of original cartridge