CPU lapping tools are specialized kits designed to improve thermal performance by flattening and polishing the surface of a CPU’s heatspreader for better contact with a cooler. By removing surface imperfections and increasing the contact area, these tools help reduce thermal resistance, resulting in lower temperatures and improved efficiency. Ideal for enthusiasts and overclockers, lapping tools typically include precision sanding materials, guides, and polishing compounds to achieve a mirror-like finish. When used correctly, they can significantly enhance heat transfer, making them a valuable addition to any high-performance PC cooling setup.