1Aluminum alloy tube has the highgrade light weight, performance and strength. 2High strength full metal head, suitable for road and mountain bikes. 3The bicycle seat post has an exquisite workmanship, bolt design offers easy infinite angle adjustment. 4With four specifications are 27.2 x 450mm/ 28.6 x 450mm/ 30.8 x 450mm/ 31.6 x 450mm, to meet your all bicycles. 5Ideal for cycling enthusiasts and collectors and it will work.Features:Aluminumalloytubehasthehighgradelightweight,performanceandstrength.High strength full metal head, suitable for road and mountain bikes. The bicycle seat post has an exquisite workmanship, bolt design offers easy infinite angle adjustment. With four specifications are 27.2 x 450mm/ 28.6 x 450mm/ 30.8 x 450mm/ 31.6 x 450mm, to meet your all bicycles. Ideal for cycling enthusiasts and collectors and it will work. Specifications:Brand: MEIJUNCondition: Brand NewMaterial: 6061 Aluminum AlloyColor: BlackSize: 27.2 x 450mmWeight: Approx. 387-431 gPackage List:1 x SeatpostNote:Please note that the 0-12 scale and 0-15 scale will be sent randomly, andmake sure you will not mind before ordering.