The new Top End Racing Chair Indoor Training Roller will make it easy to train for the road or track if it is raining or snowing. Just clamp in your Top End Eliminator OSR Racing Chair and climb in. The front section is built of 8020 extrusion aluminum and is totally adjustable to fit overall length and fork heights. This new design supports the main frame to prevent stress and metal fatigue. The drum is aluminum with precision bearings for a great roll.