Which ever Al is selling with the kits. First few batchs no problems at all. Easy to blade and sound was consistant. latest batch seems to have an issue. Some of the reeds, before I even get a razor blade seated have the reed wanting to come apart. The ones that havent come apart are inconsistant in sound. Been meaning to contact someone about it but I broke a few ribs and have been having trouble breathing much less talking on the phone haha.