Features: Made of 6063-T5 high quality extruded aluminum, which has good rust resistance and resistance, solid and durable to use. Good heat dissipation performance ensures safe and efficient work. Easy and convenient to install and remove. Used to extend the life of the transmitter and the transmission effect. Suitable for PCB, router, CPU, IC radiator, power amplifier board, power amplifier, power, module, mainboard, audion, electronic tube, electric appliance, electronic parts and components. Specification:Condition: 100% Brand NewItem Type: Aluminum Heat SinkMaterial: 6063-T5 Extruded High Quality Aluminum Model: P40*8*30-BSize: Approx. 40*8*30mm / 1.6*0.3*1.2inchQuantity: 5pcsColor: BlackFunction: Heat DissipationPackage List:5 * Aluminum Heat SinkNote:1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.