1、Using full hollow out structure design, cool appearance, better strength, full grain friction resistance, better to prevent the sliding in the process of cycling. 2、Lightweight aluminum alloy seatpost, more wear resistant, inner diameter hole for the plum tube diameter, strong and beautiful. 3、The fixed block on the top cover is plit-type structure, which makes the process of mounting the saddle easier and faster, without damaging the saddle bow, and more reasonable in design. 4、Replacementseat tube for most bicycles, mountain bikes, road bikes, and utility bikes. 5、Three colors to choose, to meet different needs and requirements. 1 x Bike Seatpost Condition: 100% Brand NewItem Type: Bike SeatpostMaterial: 7075 Aluminium AlloyOptional Color: Red, Black, ColorfulQuantity: 1PCSWeight: Approx. 293gSpecification: Approx.  31.6mm/ 1.24inchLength: Approx. 380mm/ 14.96inch