Opening diameter: 13cm In addition to this, I also sell individual accessories and bulk sales (no brand), so please take a look if you'd like. *Please read below↓ ・Regarding the color, I take photos at home with my smartphone. The color may differ slightly depending on the shooting environment. Please understand. ・Since I am a private seller, there may be oversights. Please understand. ・Please purchase only if you understand that items are stored at a private residence.