1. Suitable for mountain bike stem screws, strong and durable, with uniform thread pitch and vibrant colors. 2. PVD coating: The surface uses PVD vacuum coating for coloring, forming an oxide layer on the screw surface, enhancing surface hardness while making the screw color bright and resistant to fading. 3. The screws are processed using automated thread rolling machines, with tight thread pitch, high strength, and stable fastening. 4. Material: Iron 5. Size: M5 x 18mm
