Feature:1. 20 PCS SET: The pack contains 20 pcs pure copper heatsink for use to solve laptop frequent crashes and other thermal conductivity problems.2. MAIN FUNCTION: The heat sink conducts heat and fills the space between the display card and the heat sink module to improve heat conductivity and reduce the maintenance rate of the graphics card.3. PURE COPPER: These heat sink pads are made from premium copper material, with strong heat conduction, fast heat dissipation and high practicability.4. WIDE USAGE: The heatsink shim can be used for passive cooling of notebook computers, CPU, GPU, ram, VGA, IC chips, etc.5. EXQUISITE WORKMANSHIP: The surface of the heatsink shim is smoothly, and the edges and corners are polished smoothly without burrs.Specification:Item Type: Copper Heat SinkMaterial: Red CopperSize (Length x Width): Approx. 15x15mm/0.59x0.59in.Package List:20 x Copper Heat Sink