funtasica 4x25.4mm Straight Seat Post Seatpost Tube for Road Mountain Bike s 350MM

for most road bike, fixed gear , mountain bike, downhill bike, track bike and etc Made of aluminum alloy material, lightweight, and long lasting Clear graduation, easy to adjust the appropriate height for you Pillar design, easy to install and convenient to use Frosted surface, workmanship, comfortable hand feeling Specification:Material: Aluminum AlloyColor: BlackDiameter: Approx. 1in/25.4mmLength: Approx. 14in/350mm; 18in/450mmPackage Includes:1Piece Bike Pillar Seat Post(4 Pack)Note:Please allow 1-2mm differences due to manual measurement.