Elite Crono Mag Elastogel Trainer. Smooth, quiet, and at an awesome price is what the Elite Crono Mag Elastogel Trainer is all about. Its magnetic resistance unit features five levels of adjustment that's easily changed mid ride via a handlebar mounted controller to fine tune your workout's demands ad infinitum. And the brilliant minds at Elite really outdid themselves with the Elastogel roller that contacts the rear wheel. Made from a special cast polyurethane elastomer, not only is the roller very quiet but it also reduces the wear in the tire while simultaneously creating a better grip. Just genius!