Aluminum heatsink are generally used in the heat treatment and the fins increase the area of the board and thus provide for greater heat transfer. Widely use for Power Module, Voltage Regulator, computer PC chipset, power IC,, LED light devices, etc. Use heatsink adhesive glue to install heatsink. (Glue is not included) Please check the specification table and make sure that the size of the heatsink fits that of your component