The Aavid 6801G is a 0R Flange Mount Heat Sink with thermally conductive grease. It is designed to dissipate heat generated by electrical components such as semiconductors, transistors, and other heat generating components. The base of the heat sink, made of highly thermally conductive aluminum, allows heat to dissipate directly to the environment. The Flange Mount allows for secure installation of the heat sink to any device, and the included thermally conductive grease helps to ensure that the heat is properly transferred from the device to the heat sink, allowing for greater efficiency in cooling.