Maker: Feng, etc. Hardness: 10-14 Diameter: 10.0-10.5 Thickness: 0.55-0.57 (These values may vary depending on the material and measurement method, so please use them as a general guide.) --- Processed with Michel's gouging machine. I am selling these because the hardness is not what I use myself, but they seem suitable for lead making and assembly practice. #Oboe #Reed #ReedMaking