Vacuum Tube Box, 1" x 1" x 3", Fits Miniature Tubes (12AX7, 12AT7, 12AU7, 6DJ8, Etc) Plain White boxes for vacuum tubes Keep your tubes safe in these durable, heavy paper tube boxes Fits Miniature Tubes (12AX7, 12AT7, 12AU7, 6DJ8, Etc) 1" x 1" x 3" Inside Divider to keep tubes secure