The Omnium Over-Drive Rollers are ideal for riders looking to combine the ride feel of precision rollers and the workout of a progressive resistance unit. These rollers offer an adjustable wheelbase dimension and a stable platform for the most intense efforts. With 16″ wide, 3.25″ machined aluminum drums, your workouts are as smooth as silk and quiet as a mouse. The powder-coated steel frame and zinc-plated hardware resists corrosion and folds in half for storage or travel. Add a Floor Mat for the ideal indoor cycling setup.