Rolf prima elan es disc clincher front road wheelrolf primas elan es disc clincher front road wheel is an alloy training wheel that will help you train with comfort and reliability without a weight penalty throw in the supreme stopping power of a disc brake and youll be surprised by the impressive performance of this elan es disc wheel elan es disc clincher aero alloy training wheelthe elan es clincher front wheel is lighter than most alloy training wheels at 750 grams aerodynamic and durab