Unopened box inside was covered with tuner. After opening this package, tuner powder flowed out of each end of the cartridge. I cleaned the pickup with a brush hoping it was just too much tuner power. But to my surprise, the print quality from the cartridge was very poor: half of the print on the left side of the page was faded. Maybe I just got a lemon. Still I couldn't return it as I didn't need to use/open it before the return date.