1.Postage ink cartridge 2.for Pitney bowes ink cartridge 3.for Pitney Bowes DM500/DM525 4.for DP500 5.ISO90001 Compatible Postage ink cartridge with Pitney bowes ... Bowes® DM500,DM525,DM550,DM575Secap™ DP500,DP550OR-PB766-8(Red or Blue Ink )766-8 /767-8Pitney Bowes®DM800,DM800i,DM825,DM875, DM900 ...