compatible cartridges model 934/935 BLACK/CYAN/MAGENTA/YELLOW.

for use with these printers Officejet 6812 6815; pro6230 pro6830 pro6835.

When you buy it ,please tell us these information notice that: IMPORTANT! ! ! ! !

what's type of your printer

what's the model No. of the cartridges used on your printer

what's the color order of the cartridges from left to right when you face the printer

Please check the model of the ink cartridges and the model of the printer. Only when both of them are the same as the description here, then the Continuous Ink System can work properly.

• Convenient To Refill-Very easy to refilling process
• High quality, low cost, easy maintenance，no more other cartridges is needed! Environment friendly.
• Quality Material- High quality PP material, compatible for any types of ink, corrosion-resistant and anti-aging.
• Stable Performance- Excellent compatibility of the cartridge and chip, 100% compatible for your printer
• !!!Warning:When you're going to purchase this item, please tell us the ink cartridge model number of your printer, because different cartridge code for different areas since the priter model keeps the same ;we will not send the item until we receive your reply!

Convenient To Refill-Very easy to refilling processecocolor