Product: Universal zipper Head. Material: alloy + plastic + nylon. Size: As shown in the picture. Features: 1. Detachable and installable, 2. Wide applicability, 3. Convenience, 4. Material and Quality. Usage scenarios and advantages: Daily use, Travel and outdoor activities, DIY and Personalization. The package includes: 2pcs/3pcs/4pcs/6pcs. Notes: Due to the lighting effects and angles, there is a color difference in the product, please understand. Due to manual measurement, there is tolerance in the product size.