The quick release seat tube clamp for bikes is crafted from durable aluminum alloy, making it both lightweight and robust. This bike seatpost clamp is designed for easy and quick adjustments, allowing you to change your saddle height on the go. To operate, simply lift the quick release lever, adjust the seat post, and secure it by pressing the lever back down. This feature is especially beneficial for mountain who need to adapt to varying trail conditions. 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 -Durable material: this seat post clamp offers exceptional durability and resistance to wear and tear, suitable for rugged mountain biking - mechanism: the design allows for swift and effortless seat height adjustments, providing you with the flexibility to find your optimal riding position -Stable and secure: the locking mechanism ensures that your seat post remains securely in place, offering stability and confidence during your rides -Compatibility: this clamp is compatible with a variety of mountain bikes, making it a versatile and essential accessory for any cyclist -Simple installation: the userfriendly design allows for easy installation without the need for tools, making it accessible for all riders Package list: 2 x bicycle seat tube clamp