usage notice:
1. The diameter of the inner post is 4mm. Please make sure that the inner diameter of your keyhole is larger than 4mm.
2. The standard inner column is about 12 mm high (2-12 ordinary keys can be installed). If you have special keys, please measure them in advance.
3. The cross key can be installed (thickness equal to 3-4 ordinary keys). The black plastic key can be installed in two ways: direct installation or electric welding to dissolve the plastic supplement. Most of the metal parts have holes.
