BCH Printhead Cleaning Kit for HP 564 910 920 934 935 (with MaxStrength)

IMPROVE PRINT QUALITY. Fix printhead with stripes, missing color, or blank pages.
JUST FOR YOU. Specially designed for HP 564, 910, 920, 934, and 935 Printheads.
STRONGEST ON THE MARKET: BCH MaxStrength(TM) red solution opens stubborn clogged nozzles and dissolves dried pigment and dye inks. For minor clogs, please try BCH green and clear color cleaning solutions instead.
EASY TO USE. Step-by-Step video can be found by searching 1YxCkkrKWQs on Google. Also, see the below description for details.
TIGHT FIT. The package includes ONE pair preassembled (1 big & 1 small) FlushTip900 adapters. The tip can work on HP's black grommet directly. The adapter is designed to have a flexible connection for more tight situations.

Package includes:
1 x BCH MaxStrength Red Cleaning Solution (120 ml)
1 x Pair of FlushTip900 Unclogging Tip with 10 ml syringes

Instructions: 1) Put the printhead into the middle of the printer. You can start the printer and, as soon as the printhead moves, cut off the power. The printhead should be free to move. Slide some paper towels underneath the printhead to absorb ink overflow. 2) Fill the syringe with 10 ml of cleaning solutions. 3) Slowly and gently push down the FlushTip900 and inject the cleaning solution into the printhead. You will need about 5 ml for the black and 3 ml for each color. Do not push too hard. 4) Depending on the type of cleaning solution, BCH's solution will need 1 hour (green and white) to 12 hours (red) to work on the clog. Put a wet paper towel on top of the printhead and close the printer lid. 3) After 1 to 12 hours, depends on how bad the clog is, reinstall the cartridges and do some head cleanings with HP's built-in function.
Repeat 3-6 if necessary. 4) Run some "clean smear" routines from your maintenance menu, or print a few more pages to remove the stain from the flushing.