Features: The Heat Sink ensures fine heat dissipation, keeping your development board cool and efficient. Perfect for high performances computing tasks Made from durable metal material, the Heat Sink provides excellent thermal conductivity, effectively dissipating heat generated by the boards components. Designed for enthusiasts, developers, and DIYers, the Heat Sink is a must have accessory for those seeking to enhances the performances of their single board computers. Whether you're building a home media centers, a gaming console, or a home automation system, the Heat Sink ensures stable and reliable operation even during intensive tasks. This quality and easy to install Heat Sink improve thermal management for extended usage without worrying about overheating issue. Specifications: Material:Aluminum For Orangepi 3B Development Board 1set contains:1x14x14x6mm/0.55x0.55x0.24in Heat Sink ,1x14x10x6mm/0.55x0.39x0.24in Heat Sink and 1x7x7x6mm/0.28x0.28x0.24in Heat Sink Package Includes: 1set Heat Sink(3pcs) note: Please allow 1-2cm errors due to manual measurement,please 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.