ITEM NAME:1/8 RC Climbing Truck 4274/4268/7282 Motor Heat Sink with 40mm Cooling Fan Description: 40mm Fans Heat Sink Made of plastic and aluminum, CNC machining Practical and durable for protecting the motor from overheating Suitable for 42mm diameter brushless motors such as 4274, 7282, 1515, 4268 Size: 6.1x4.1x4.1cm / 2.4x1.61x1.61inch Package Includes: 1 Piece Brushless Motor Heatsink with Fan Cooling Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Due to manual measurement, there may be 1-2mm error in size SKU: DMO0015991661016202.40mm Fans Heat Sink. 1 Piece Brushless Motor Heatsink with Fan Cooling. Practical and durable for protecting the motor from overheating. Due to the difference between different monitors, the picture may not reflect the actual color of the item.