On One ScandAl Aluminium XC Mountain Bike Frame 26×18. On One ScandAl hardtail aluminium bike frame in great structural condition with minor cosmetic damage. A great medium size 18″ frame compatible with 26″ wheels to be used for cross country and off-road riding. Used sporadically over a couple of years and not been used in the last few years. Includes headset and seat post clamp. Please send me a message if you have any questions.