At "Reed Workshop YURURI," we are very selective about our materials. We offer materials that were rejected during the selection process at an affordable price. Although these materials were not selected, they are not unsuitable for reed making. We choose materials that meet certain standards for things like luster and hardness. We hope you will find them useful for practicing reed making. Also, even beautiful materials may be rejected if they don't meet our standards for hardness. So, those who prefer slightly softer materials should definitely give them a try.