Description: 【Material】: This Bike Seat Post Clamp is made of premium metal materials, ensuring durability and longevity for your mountain bike. 【Secure Fit】: With its precise design and sturdy construction, this Bicycle Seatpost Clamp ensures a secure fit to enhance your biking experience. 【Lightweight Design】: Despite its strong construction, the Quick Release Seatpost Collar is lightweight and does not add any extra weight to your mountain bike, ensuring smooth rides every time. 【Easy Installation】: The Bicycle Quick Release Seat Post Clamp can be easily installed without the need for professional help, making it a convenient addition to your bike accessories. 【Versatile Use】: Designed specifically for mountain bikes, this seat post clamp is an essential component for any cycling enthusiast. Specification: 28.6mm: 2.86cm/1.13inch, suitable for 1.00inch Seat Post 31.8mm: 3.18cm/1.25inch, suitable for 1.07inch, 1.13inch Seat Post 34.9mm: 3.49cm/1.37inch, suitable for 1.20inch, 1.21inch, 1.22inch, 1.24inch Seat Post Package Includes: 1 Bike Seat Post Clamp Note: Please allow slightly errors due to manual measurement and different monitors.