Pitney Bowes E300 / U701 / U702 / U703 compatible ribbons black (2 pack). Compatible with cartridge model 768-1* Pitney Bowes is used for reference purposes only and does not imply that the cartridge is a Pitney Bowes product. We designate the cartridges as "compatible" to / for Pitney Bowes products which means that the cartridges are not made by Pitney Bowes but are generic compatibles that can be used in the Pitney Bowes machines.