I bought a second hand MP730 here in Australia and it had these compatible cartridges in place. Interestingly they are very close to OEM cartridges in that the venting grove follows a course that has the two wells like the Canon OEM. These type of cartridge look very suitable to use as part of a CIS. The elbows I use consist of two parts a silastic sleeve and a plastic elbow. These wells over the sponge section are ideal to take this elbow when drilled slightly bigger.
They also appear to have a strong front clip.
If any one can identify this and its supplier I would be interested in sourcing some.
I noted that this cartridge had been installed in the printhead but the sponge vent tab had not been removed.
They also appear to have a strong front clip.
If any one can identify this and its supplier I would be interested in sourcing some.



I noted that this cartridge had been installed in the printhead but the sponge vent tab had not been removed.