Features 1、[ALUMINUM ALLOY] The cooling fins are made of aluminum alloy material, surface oxidation treatment, wear resistant and durable. 2、[SLOTTED DESIGN] With slotted design, the heat sink has a large contact area with the air, and the heat dissipation effect is good. 3、[WIDE APPLICATION] Suitable for ultrasonic, CPU, power amplifier board, LED, power supply module and high power electronics, etc. 4、[COMPACT SIZES] These heat sinks are small and compact, easy to install and do not take up space, and have good practicability. 5、[8PCS IN 1 SET] The kit includes 8pcs aluminum alloy heatsinks, which can be used and replaced at any time. Specification Item Type: Cooling Fins Material: Aluminum Alloy Surface Treatment: Anodic oxidation treatment Overall Size: Approx. 50 x 50 x 15mm / 2 x 2 x 0.6in Purpose: Suitable for ultrasonic, CPU, power amplifier board, LED, high power electronics etc. Package List 8 x Cooling Fins