Empty CISS for Canon 820/821/520/521/320/321 
Outer tank use PP material, prevent broken during delivery and it can endure solvent ink,  make sure not print spot. 

. Environmentally Friendly 
. Pre-Assembled 
. No Leaking or clogging. 
For use with Canon printer: 
CANON IP4760/CANON IP3680/CANON MP990/CANON IP4680 
CANON MP980 
CANON MP620/CANON IP4600/3600/4700...