This is a Silverstein Generation 5 HEXA. I've used it for about three weeks. It's in almost new condition with very little wear. 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; there is no box. If you need to adjust the string, you can use a 4mm hex wrench set, which is available at 100-yen shops, so you don't need to buy a special tool. Please check my profile before purchasing.