Features 1、Made of high quality aluminium alloy with exquisite workmanship, which is smooth, lightweight, durable and wear-resistant 2、The inner diameter of the clamp is 34.9mm, fit for 30.4/30.8/31.6mm bike seat post 3、Simple and convenient design, easy and quick to install 4、Suitable for most types of aluminum frame bikes, like mountain bike, road bike, etc 5、Available in 5 colors, you have more choices Features: 1. Made of high quality aluminium alloy with exquisite workmanship, which is smooth, lightweight, durable and wear-resistant. 2. The inner diameter of the clamp is 34.9mm, fit for 30.4/30.8/31.6mm bike seat post. 3. Simple and convenient design, easy and quick to install. 4. Suitable for most types of aluminum frame bikes, like mountain bike, road bike, etc. 5. Available in 5 colors, you have more choices. Specifications: Condition: 100% Brand New Item Type: Bicycle Accessory Material: Aluminium Alloy Optional Color: Black, Red, Blue, Gold, Titanium Diameter: 34.9mm / 1.4inch Fit For: 30.4/30.8/31.6mm seat post(the bicycle should be aluminum frame) Weight: Approx. 25g Package Include: 1 x Seat Post Clamp Note: Only suitable for aluminum alloy frame, carbon fiber material cannot be used. Package List