Welcome to our store! 1. Wear resistance: Made of high-strength, wear-resistant aluminum alloy. 2. Comfortable: CNC cut, polished, smooth surface without burrs, and feels good. 3. Lightweight without added weight: Aluminum alloy, large hollow area, lightweight without added weight. 4. Excellent performance: Ergonomic hollow design, excellent performance, durable, ultra-lightweight, and easy to install. 5. 3 colors: Products are available in red, blue, and black—3 colors to choose from, to add a beautiful touch of color to your ride. Item Type: Seat Post Clamp Material: Aluminum Alloy Product Gauge: Approx. 34.9 mm / 1.4 inch Product Application: Seat post diameter is 30.4, 30.8, 30.9, 31.6 mm, 34.9 mm. Seat clamp approx. 30.4 mm / 1.20 inch, approx. 30.8 mm / 1.21 inch, approx. 30.9 mm / 1.22 inch, approx. 31.6 mm / 1.24 inch. 1 x Seatpost Clamp. Customers are our priority. If you encounter any problems with your product after receiving it, such as damage or an incorrect quantity, please contact us immediately. We strive to provide you with the best customer service.