uxcell Aluminum Cooler Radiator Heat Sink Heatsink 25mm x 25mm x 10mm 5pcs Black Use heatsink adhesive glue to install heatsink. Glue is not included here. Please check the specification table and make sure that the size of the heatsink fits that of your component. Adhesive thermal tape backing. Reduce the risk of hardware failure due to overheating.