Feature: 1. Bike Seatpost: A professional hydraulic bicycle seat post that ensures high lubrication and smooth lifting and lowering. 2. High Strength: Made of 7075 aluminum alloy and coated with a golden inner tube, the seat post is molded as a whole, ensuring high strength and durability. 3. Sealed Design: Sealed to effectively protect the interior of the seat post, it's waterproof, dustproof, and allows for optimal lubrication. 4. Flexible: The bike seat post can be locked securely at any position, providing the rider with an ultimate comfort experience. 5. Balanced And Secure: The seat post is fixed using a weighing scale and double bolts to provide secure and even force distribution. Plus, it's also compatible with carbon bow seat pads. Specification: Item Type: Bike Seat Post Material: Aluminum Alloy Weight: Approx. 852g / 30.1oz External Rounting Size: Approx. 31.6x385mm / 1.2x15.2in Suitable for: Mountain Bike for DH for FR for AM for XC. Package List: 1 x Bicycle Seatpost1 x User Manual7 x Remote Lockout Accessories