XIANQI --HIGH QUALITY: Made of high quality aluminum alloy, the seatpost clamp is durable for long service. --COMPATIBLE: 28.6mm seat post clamp applies to 25.4mm seat post, which is suitable for any style of bike. --EASY TO INSTALL: Its simple design makes it easy to install and use. --HIGH QUALITY: Made of high quality aluminum alloy, the seatpost clamp is durable for long service. --COMPATIBLE: 28.6mm seat post clamp applies to 25.4mm seat post, which is suitable for any style of bike. --EASY TO INSTALL: Its simple design makes it easy to install and use. --MULTIPLE CHOICES: There are several colors for you to choose and you can get your desired one. Specification: Item Type: Seatpost Clamp Material: Aluminum Alloy Optional Color: Silver Size: Approx. 62 * 47mm Inner Diameter Approx. 28.6mm / 1.1inch Weight: Approx. 41g / 1.4oz Package List:1 pcs* Seatpost Clamp