Wide application: our bicycle seatpost clamp is suitable for most bicycles, including mountain bikes, indoor bikes, off-road bikes and folding bikes. With the quick-release seatpost clamp, you can easily adjust the height so you can travel comfortably with family and friends without having to disturb different seat heights. Thoughtful design: the bicycle seat post clamp features a quick release design that allows easy disassembly and adjustable height to improve the riding experience. It ensures a more comfortable, stable and safer ride. Easy installation: The aluminium alloy bicycle seatpost clamp is easy to install and use and requires no tools. It allows for effortless seat post height adjustment, even for first-time users who can successfully complete the installation within minutes. Reliable material: Our bicycle seat clamp is made of high-quality aluminium alloy, which is lightweight, durable, robust and fade-resistant and ensures long-lasting use. It provides both comfort and safety. Applicable size: the seat tube clamp has a diameter of 31.8 mm. Please check the label or size of your seat post before purchasing the seatpost clamp and choose the suitable one. You can measure the size of your seat post, suitable for outer diameter from 30.2mm to 31.9mm.