Features: brand new and high quality High quality meterial,made of premium metal,lightweight and durable,improve the apprance. Easy to install,accurate size,convenient install and remove,no need too much for time or labor. Heat dissipation,good heat dissipation performance, effectively prevent the motor from overheating. Practical design,upgrade accessories,exquisite workmanship enhance overall performance in terms of operation and durability of your RC car. Suitable for 1/8 1/10 540 550 3650 3660 3665 3670 Brushless Brushed Motor. Specifications: Material: Metal Color:Blue/Orange/Red Size: Approx. 4.1x3x4 for cm/1.61x1.18x1.57 inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Cooling Fan