This is a Silverstein Cryo4, 4th generation. It has been used to some extent and has minor scratches, but it's in good condition. I used it with a B♭ clarinet, but it's size 7, so it also fits a small alto saxophone. Everything in the photos is included, and there is no box. If you need to adjust the string, you can use a 4mm hex wrench set sold at 100-yen shops, so you don't need to buy a special one. Please check my profile before purchasing.