Thank you for viewing. I used these strings from December 31st to January 12th, and then removed and stored them, so the usage period was about two weeks, and they are in beautiful condition. These gut strings produce a warm sound unique to gut, and the overtones increase, resulting in a very pleasant resonance. I purchased a new set for about 27,000 yen. They are still in usable condition, so I can't lower the price too much, but I will consider a small discount for those who are interested, so please feel free to contact me. I have discarded the outer packaging, so they will be in a different bag. Please understand. The A and D strings have ball ends, and the G and C strings have loop ends, but you can use them by hooking the knot part into the tailpiece hole, just like a ball end.