Features 1.Wear Resistance: It is made of aluminum alloy with high strength and wear resistance 2.Feel Good: CNC cutting, polishing, smoothly face without burr, and feel good 3.Light Without Weight Gain: Aluminum alloy material, large area hollow, light without weight gain 4.Excellent Performance: Ergonomic hollow design, excellent performance, durable, ultra light and easy to install 5.3 Colors: Products are available in red, blue, black, 3 colors for your choice, to add some beautiful color to your ride Specification Item Type: Bike Seat Post Clamp Material: Aluminum Alloy Product Caliber: Approx. 34.9mm / 1.4in Product Application: Sitting Rod Diameter is 30.4, 30.8, 30.9, 31.6mm, 34.9mm Seat Clamp Approx. 30.4mm / 1.20in Approx. 30.8mm / 1.21in Approx. 30.9mm / 1.22in Approx. 31.6mm / 1.24in Package List 1 x Bike Seat Post Clamp