Regarding the standard dimensions, the direct diameter is 5.5 cm. I believe this to be the case. Therefore, I work the night shift and live my daily life with my son, and I am humble. Therefore, I approve of the purchase. For this reason, I am troubled by violations. The writing on this entire page is my property. Therefore, the infringement of property is a crime. I plan to dispose of it as waste, and imitation, forgery, and dismantling are infringements that will be erased from this world.