This is a set of HATA stack knobs and Hirame knurled straight knobs, which were previously produced in limited quantities. The stack knobs were purchased directly from the manufacturer in 2016, but they were never installed and have been stored at home since then. The Hirame knurled straight knobs were purchased from a musical instrument store and were once attached to an effector, but they were never taken outside and were only used at home. Both items are being sold as I have no opportunity to use them in the future. Condition: Stack knobs: There are faint, cloudy-like scratches on the surface of the upper knob. They are barely noticeable, and you might only notice them depending on how the light hits them. Hirame knurled straight knobs: There are some scratches on the surface and sides. The original boxes have been discarded, so the items will be sold as is (including the set screws).