Excellent thermal conductivity: Made of thermal silica gel with heat conductivity of 12.0 W/mK for M.2 2280 SSD (22 x 80mm) Heatsinks. Part Number: M.2 Thermal Pad. Model: M.2 Thermal Pad. Just need to remove the protective films on both sides of the thermal pad and put it under the M.2 SSD Heatsink.