Elite Super Crono Power Mag Elasto Gel Trainer: Super Crono stability at a new lower price! 45mm Elasto Gel roller offers enhanced tyre grip, reduces wear & vibration & offers 20% noise reduction over other rollers. Super powerful magnetic resistance unit offers the strongest & smoothest adjustable resistance it its class 8 levels of resistance selectable from handlebar mounted lever Super Crono frame is easy to set up, uses the riders weight to keep the tyre on the roller, & offers unrivalled stability Comes pre-assembled & folds flat for easy storage