Vandoren Clarinet Reed VK1 Synthetic, 50 count, 1 box. I've also taken a picture of the catalog comparison chart, so you can compare the thickness with other reeds. I'm selling these because I bought several boxes to try out and didn't use them. Compared to the Traditional blue box, it's between a 3 and a 3.5 (see photo). Please refrain from purchasing if you are concerned, as these are items stored by an individual. Thank you.