The quick release lever on this seat post clamp allows for effortless adjustments, making it ideal for mountain who frequently encounter varying terrains. Simply open the lever, adjust the seat post to your preferred height, and close the lever to it securely in place. This user-friendly feature ensures that you can make swift modifications without the need for additional tools, enhancing your riding experience. This functionality provides the flexibility and convenience you need to maintain optimal comfort and performance. Features -Color:Black -Material:Aluminium alloy -Size:6.50X4.80X1.00cm/2.55X1.89X0.39in -Caliber: 31.8 mm -Note: Suitable for 27.2/28.6 mm seat post -Sturdy construction: this seat post clamp is both lightweight and strong, providing performance for mountain biking -Quick release function: the design allows for easy and fast seat height adjustments, giving you the flexibility to adapt to different riding conditions -Secure fit: the locking mechanism ensures that your seat post remains securely in place, offering stability and reliability during your rides -Versatile use: compatible with a wide range of mountain bikes, this clamp is a versatile accessory that can improve your biking experience -Userfriendly installation: the simple design allows for easy installation without the need for tools, making it accessible for all cyclists Package list: 5 x bicycle seat tube clamp