Pushing your Mamba Monster to the max? Just the type who likes the motor as cool as possible? No matter which category you fall under, Castle has the solution! The new CC Blower plugs directly into your receiver for power, and can drop motor temperatures as much as 30 degrees!* A must have for any hardcore basher or temperature freak. Includes, fan, shroud, and two (2) black zip ties. Fits on motors with outside diameters between 38mm and 48mm. Get yours today! Your Mamba Monster will love you for it!