This is a set of HATA stack knobs that were previously produced in limited quantities. I purchased them directly from the manufacturer in 2016, but I never installed them and have kept them stored at home. I am selling them because I will not be using them in the future. Although there are no noticeable scratches on the surface as they have never been used, there are a few small scratches on the inside of the knobs from when they were purchased and from long-term storage. Therefore, while unused, I am listing them as "Like New." Please check the images for the condition. The original box has been discarded, so the sale includes only the knobs themselves (with the set screws).