X AUTOHAUX 31.8x450mm Bicycle Seat Post Aluminum Alloy with Scale Mark Black

• DIMENSION: Bicycle Seat Post Size: 350x31.8mm / 13.78"x1.25"(L*D), To fit frame seat post hole: 31.8mm / 1.25", Length: 350mm / 13.78", Tube thickness: 2.5mm / 0.1"
• NOTE: Please do measure the actual outer diameter then choose the actually required diameter or measure the inner diameter of the frame tube before purchasing. A saddle clamp is not included, please purchase a saddle clamp if needed.
• MATERIAL: The seat post is made of aluminum alloy, strong and durable materials for long time service.
• EASY INSTALLATION: It is easy to install the saddle on this seat post. Just release the bolt of the old seat and unload the seat, then fix the seat on the new seat, and then install it to your bicycle rack. There is a safe line mark on the seat post. Please insert at least above the minimum safety line.
• UNIVERSAL FIT: Suitable for most of mountain bikes, road bike, MTB etc.

Feature: Easy to install. Made of aluminum alloy, durable materials for long time service. Suitable for most of mountain bikes, road bikes, MTB, etc. There is a safe line mark on the seat post. Please insert at least above the minimum safety line. Specification: Material: Aluminum Alloy Color: Black Thickness: 2.5mm / 0.1" Dimension: 450x31.8mm / 17.72"x1.25"(L*D) Hole 1 Size: 31.8x27mm / 1.25"x1.06"(OD*ID) Hole 2 Size: 22x16mm / 0.87"x0.63"(OD*ID) Installation Step: 1. Release the bolt of the old seat and unload the seat; 2. Fix the seat on the new seat; 3. Install it on your bicycle rack. Note: The size is measured by hand, so it may have a little 1-2 mm difference. Please do measure the actual outer diameter then choose the actually required diameter or measure the inner diameter of the frame tube before purchasing. Package Included: 1 Pcs Bicycle Seat Post