This is a brilliant Magnetic Alu roller trainer aimed at the enthusiast user. A new resistance unit offers up to 70% more power compared to previous Mag Concept model.Featuring a five-position adjuster mounted on the handlebars, it is incredibly easy to change resistance levels whilst riding. An extremely quiet and smooth action simulates real road riding, there are curved legs to create more heel space and the wide base is very stable and easy to use.*Comes fully assembled and folds flat for easy storage*Includes spare Q/R for those using Mavic or similar non-compatible Q/R skewers