DescriptionContains 1 each: SFE-4 and SFE-6. Contains 2 each: SFE-7-1/2 and SFE-9. FeaturesReviews0 Contains 1 each: SFE-4 and SFE-6. Contains 2 each: SFE-7-1/2 and SFE-9. Grade SFE Type Glass Tube Write a review There are no reviews yet