_x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Aluminum Alloy Seatpost Mountain Bike 30.9 31.6mm Road Bike Seat Post MTB Seat Tube Offset Cycling Accessories _x000D_ Feature: _x000D_ Using high-strength 6061 aluminum alloy material, precision CNC machining, high hardness, fine workmanship. _x000D_ The hydraulic structure can be locked at any position, frameless, and more comfortable to ride. _x000D_ The lifting height can be adjusted by the handle. _x000D_ It can be converted into 31.6mm by reducing sleeve. _x000D_ The surface of the seat pipe is printed clearly and the scale is easy to adjust and fit the height. _x000D_ The seal ring design is used to effectively protect the inside of the seat tube to be clean, waterproof and dustproof, oil does not leak, and maintains lubrication. _x000D_ _x000D_ Specification: _x000D_ Material: 6061-T6 aluminum alloy _x000D_ Diameter: 30.9/31.6mm _x000D_ Length: 375mm _x000D_ Weight: about 690g _x000D_ Stroke: 100mm _x000D_ Model: (A)30.9mm, (B)Adapter 31.6mm Reducing Sleeve _x000D_ Applicable: Mountain /road bike/ folding car _x000D_ _x000D_ Note: _x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you _x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x000D_ _x000D_ _x000D_ Packages: _x000D_ _x000D_ 1 X Bike Seat Post _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_