Uxcell Bicycle Seat Post Aluminum Alloy Seat Tube with Scale Mark Black Universal for MTB Mountain Bike X 450mm 33.9

Dimensions: Bike seatpost size: 350x31.8mm(L*D), frame seatpost hole: 31.8mm, length: 350mm, tube thickness: 2.5mm Note: Please measure the actual outer diameter and then choose the diameter you actually need, or measure the inner diameter of your frame tube before purchasing.The saddle clamp is not included, please purchase a saddle clamp if necessary. Material: The seatpost is made of aluminum alloy, a strong and durable material for long-term use. EASY INSTALLATION: It's easy to install the saddle on this seat post. Just unbolt the old seat, take it off, fasten the seat to the new seat and attach it to the bike rack. There is a safe line mark on the seat post. Please insert it above the minimum safety line. Universal Fit: Suitable for most mountain bikes, road bikes, MTBs, etc. Features: Easy to install. Made of aluminum alloy, durable material for long term use. Suitable for most mountain bikes, road bikes, MTBs, etc. There is a safety line mark on the seat post. Please insert it above the minimum safety line. specification: Material: Aluminum alloy Color: Black Thickness: 2.5 mm Hole 1 size: 31.8x27mm(OD*ID) Hole 2 size: 22x16mm(OD*ID) Installation Steps: 1. Loosen the bolts on the old seat and lower the seat. 2. Attach the seat to the new seat. 3. Attach to bike rack. Note: The size is measured manually, so there may be an error of 1-2 mm. Please measure the actual outer diameter and then choose the diameter you actually need, or measure the inner diameter of your frame tubes before purchasing. Package Includes: 1 Piece Bicycle Seat Post