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: Silver Tone
Thickness: 2.5mm / 0.1"
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