1：1.5mm in diameter and 6mm in length
2： The tritium tube is a glass shell, which is fragile. Do not squeeze it during installation. After receiving the goods, please confirm whether it emits light normally before installation. Only UV shadowless adhesive can be used to paste deuterium tubes, and 502 adhesive cannot be used.
3： Tritium tubes are weak light sources that can only be seen emitting light in dark environments without the need for any external sources.
4： The half-life of tritium is 12.3 years. In theory, it can be bright for nearly 25 years, but after a half-life of 12.3 years, its brightness gradually decreases,
5： I personally think the general brightness ranking is green>yellow>orange>pink