For exclusive use First of all, this is not a sale of clippers. It is the sale of compatible ceramic blades. For your genuine ER9900 or ER9920, simply attach this ceramic blade. It won't cut as short as our compatible fade blade, but it's possible to cut to about 0.3mm. The blade extension may vary depending on the clipper model. Even for replacement blades with reduced sharpness, replacing and cleaning them can somewhat restore the sharpness, making them useful in emergencies. How about keeping them as a backup? Please note that the sound will be slightly louder than the genuine blades. I am selling these because I have switched from ceramic blades to stainless steel blades, which have improved sharpness. Available colors are white and gray. I will send you one of the colors depending on the stock. If you have a preference for a specific color, please ask in the comments. ⚫︎ To minimize shipping costs, some parts may be processed. There is no problem with usage. It will be shipped via standard mail. In this case, the blade part will be protected with bubble wrap due to the thickness, but the base will be placed directly as it will not break.