Rigotti oboe cane. Thickness: 0.53-0.57 (54, 55 are common) Hardness: 7-19 (13-14 are common) Since these are materials outside of my personal use, I'm offering them at a low price to those who want to try various materials. They are beautiful materials, so I think there are many good pieces for those who match the numbers. 50 pieces for 5000 yen including shipping. Immediate purchase is welcome!