If you're looking for a carbon-fiber stem that out-does aluminium in every regard and that you'll never have to worry about, then this light, stiff, durable, practical EVE Stem is just for you. It�s simple and has many advantages. Easier to work with, easier to care for, more flexible in use. It's light, but not scary light. And that's for a reason. ENVE wanted it to be stiffer and more durable than other stems, be they aluminium or carbon-fiber, in the same weight range.