Feature Highlights: 1. Wide Compatibility – Fits seatpost diameters from 27.2mm to 31.8mm, making it suitable for a variety of road and hybrid bikes. 2. Secure & Gentle Clamping – Specifically designed for carbon fiber frames to prevent over-tightening and protect your seatpost from damage. 3. Durable Aluminum Alloy – Made from lightweight yet strong aluminum alloy, ensuring reliable performance and corrosion resistance. 4. Clear Torque Guidance – The marked torque value applies to the lower screw. The top screw is for securing the seatpost—do not exceed 3Nm to avoid harming your frame or clamp. 5. Easy to Install – Simple two-bolt design allows quick and tool-free installation, getting you back on the road in seconds. Product Details: This bicycle seatpost clamp is crafted from high-quality aluminum alloy, offering a sturdy yet lightweight hold for your seatpost. Its design is especially friendly to carbon fiber frames, reducing the risk of overtightening and frame damage. With a diameter range of 27.2–31.8mm, it accommodates most common seatpost sizes. The clamp features clear torque indicators: the lower screw follows the printed torque specification, while the top screw should not exceed 3Nm to ensure safe clamping. Perfect for road bikes, hybrid bikes, and carbon-frame builds, it provides a secure, reliable, and easy-to-install solution for keeping your seatpost firmly in place. Specifications: - Color: Black - Material: Aluminum Alloy - Size Range: 27.2–31.8mm - Package Includes: 2 × Bicycle Seatpost Clamp Note: - Only the items listed above are included in the package. - Slight color variations may occur due to lighting and screen differences. - Allowable size tolerance: +/- 1–3mm.