Games&Tech 2 Pack Black Aluminum Heatsink Cooler Cooling Kit with Adhesive for Raspberry Pi A A+ B B+ 2 3 Model B (2 Sets of 3 Aluminum Heat Sinks) Fits the CPU/RAM, Network and Power chips on the Raspberry Pi. Pre-applied thermally conductive adhesive makes installation simple and fast. Help keep your Pi cool while overclocking! Just peel and stick.