General description Lightweight bicycle seatpost constructed from ultra-light and strong aluminum alloy, designed for track, road, mountain, and off-road use. Technical specifications Diameter: 27.2 mm Length: 300 mm Weight: about 530 g Material: aluminum alloy Compatibility and accessories Check the diameter of the original seat post to choose the same size. Measure the inner diameter of the frame tube for proper fit. Other information Package Contents: 2 x Bicycle Seat Post Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.