The cone for mounting without the PWR-Foil propeller guard is available for both our 65mm and 70mm diameter motors. You have to choose the right cone for your motor diameter. If you don't know which motor your PWR-Foil is equipped with, please refer to the pictures below. These pictures were taken at the junction between the motor (black part) and the mast (aluminium part). The 65 motor is equipped with an adapter ring while the 70 is not.