Description The item is a set of professional and practical heat sink, which is mainly made of durable aluminum. Heat sinks are used with high- power semiconductor devices, where the heat dissipation ability of the component itself is insufficient to moderate its temperature. Features- Color: Silver- Material: Aluminum- Size: 3. 40X2. 50X1. 20 cm 1. 34X0. 98X0. 47 inch Package Including 40 x Heat Sinks