Alternative to HP C4127X Cartridge Ref 27X Cartridge is manufactured within locations accredited to ISO14001 and ISO9001 Cartridge complies with the requirements of Europe's REACH regulations (Registration, Evaluation, Authorisation and Restriction of Chemicals) Toner cartridge outer packaging is made from 70% recycled card and both the plastic and card used in the packaging can be fully recycled High Capacity Page Life approx: 10000 pages Compatible Printers: LaserJet 4000/4050