It attaches easily to the motor using three screws and is constructed from heavy-duty plastic. Although it has a hydrodynamic design, it increases energy consumption due to more drag, which can lead to reduced battery life.We highly recommend using this guard, especially for riders with little to no foiling experience, as it provides an additional layer of safety. It is therefore also included with the Foil Cruise Set AL.Please note that while the guard enhances safety, it does not fully protect against the rotating propeller. Caution is still advised when using the Cruise mast with the guard in place.For proper installation and replacement, please refer to the help center.