IBM 4312 Toner Refill Kit by BISONTEC Compatibility List: IBM 4312Xerox DocuPrint P12 Now you have an alternative to buying expensive new IBM toner cartridges! Refill your existing toner cartridges from IBM and save over $100 PER CARTRIDGE! Refilling these cartridges is easy and takes less than 5 minutes. The BISONTEC toner refill system for the IBM cartridges is easy for anyone to do and restores your toner cartridges to LIKE NEW condition. With BISONTEC special formulated toner for the IBM 4312 / Xerox P12 toner cartridges you will enjoy 95 - 100% same quality as the ORIGINAL cartridges that you would order direct from IBM (6 000 page yield capacity at 5% page coverage). This item contains: 1 x Toner Refill 1 x Funnel1 x Refill Instructions Refill instructions and tools are included. Everything you need to refill your IBM 4312 / Xerox Docuprint P12 cartridges is included and it only takes 5 minutes to do!