1. Since the product is a convex mirror, it is normal to have gaps at the edge of the rearview mirror after installing the convex mirror. When the convex mirror is pasted, since it is a convex mirror, the entire rearview mirror will become thicker, it will protrude a little after installation, which is normal. This condition has no effect on the use of the mirror and its ability to increase the field of vision 2. If your motorcycle rearview mirror lens is cracked, but the lens does not fall off, you can directly stick the convex mirror on the motorcycle rearview mirror lens, which is very convenient. If your motorcycle rearview mirror lens falls off completely and only the mirror shell remains (without lens), you cannot install a convex mirror. 3. Installation method: First, you need to wipe your motorcycle mirror lens clean, then you can tear off a small part of the back glue at one corner of the convex mirror, and then you need to align the convex mirror with your motorcycle mirror