Do it wiser Compatible Toner Cartridge Replacement for Oki C301dn C310dn C310n C321dn C330dn C510dn C530dn MC361dn MC561 MC561dn (Black)

i replaced the toners in my printer and less than 300 pages printed the black is now showing empty, given these run off the toner chip for page count , something is clearly wrong, either the chip is faulty or the item is not a 2200 page toner, either way its not as described by the sellerEDIT doitwiser contacted me and issued a refund and a replacement set of toners, ive used them since and had no issues, so may have been just a bad batch, but as always things go wrong and its as much about how the company handles the issue

Trash don't buy.Printer hasn't recognised any of the cartridges so they are unusable.Too late for return window when I got around to needing them after low cartridge warning.

Have had to return two sets of these now. While the print quality is reasonable both leaked toner inside my printer and had to be returned for full refund. Amazon were excellent in assisting with the situation.

These were continually rejected by the printer. Whatever I tried, they would not be accepted. Just found they are too late to be returned. Waste of mony!

Great value for money and good qualityI would highly recommend these toners

These are pretty reliable for genetic toner cartridges. Many other makes don't work, or don't last, but these are the best we've found so far. Also, the price is among the lowest on ebay, amazon or third party and with next day delivery, they're the best option for us.

The cartridge lasted about 100 pages before warning toner low, got about 300 pages total from a cartridge which should print 2000 pages plus. Buy at own risk, price does = quantity of pages

The main issue with these cartridges is that you cannot differentiate between the colors, I needed K,but unfortunately nothing on the box or cartridge to indicate which. I sent a email to Do it Wiser to ask for help and to date received no reply.