1. Material: aluminum alloy 2. Technics: CNC, anodizing 3. Use: Suitable for mountain, folding and other bicycles seat post fixed, 4mm hex wrench disassembly 4. Lightweight aluminum alloy is selected as the material, the middle wall thickness is made thin (only 0.8mm), while retaining the two reinforcement bars to enhance the strength 5. Rounded and smooth surface, no burrs, will not damage your bike 6. Anodized color plating, bright colors 7. Size: 31.8mm/34.9mm
