Size:Without damper This CISS is compatible with all HP 4 colours printer. Cause it supports too many printers,.it's hard to make for each model. Therefore there isn't a installation instruction come with the system..But you can search on youtube or google. There are lots of videos show how to install the system..We suggest our customer understand how does the system work, before place the order..Please ensure that you fully understand how to install this CIS system properly to your printer before you start it. For any enquiries, please don’t hesitate to contact our expert on our technical support For all sales enquiries please contact us via eBay message .DIY convert your empty HP cartridge to a CISS.Compatible with All HP 4 Colours Inkjet Printers.NOTE: this CISS tank do NOT include original cartridges.For Professional users, we suggest add One way damper / check valve..To avoid ink flow back from ink cartridges. Contact us if you need it. .
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