I was using this. It's the product. Please refrain from purchasing if you are overly concerned about details. It has been stored at home, and some time has passed since I obtained it. I have tested all of them and confirmed that the ink comes out, but please understand that they may run out quickly. No individual sales. Immediate purchase is OK, but please refrain from purchasing if you are concerned about minor details. Thank you. Please only purchase if you agree to shipping via Yu-packet Post Mini. Thank you for viewing.