[Made of high-quality material CNC machined decent and long-lasting with great thermal conductivity. Up to 20000 RPM to provide excellent cooling effect to keep good motor performance. Comes with adjustable mount with diameter of 47-51mm perfect for 1/8 1/5 scale RC car brushless brushed motors such as 4985 1717 to provide great cooling effect for various of RC cars. This RC motor cooling fan supports 8-12V power supply can be powered by the equipped 2S and 3S lipo balance connector with a circuit breaker which can be closed when not in use 1A current when connected with12V power supply. Package includes RC motor cooling fan with adjustable mount*1 screw*1 set.]