If you are looking for a professional and heat sink paste, then your research is over here. That's because our product can meet your need. Adopted of , it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Color: Black -Material: silicone grease -Size: 6.00X6.00X6.00cm/2.36X2.36X2.36in Thermal conductivity: 0.25 Celsius degree - /w Thermal conductivity: >4.8w/ Specific gravity: >2.5g/ Operating temperature: -50 °c to 120 Celsius degree - Use dry paper towels to clean the surface of the heat source (CPU) and heat sink (radiator). - Use a spatula or other tools to apply the thermal grease on the CPU, no need to apply it on the heat sink. - The thermal grease should be evenly spread on the entire surface of the CPU. - It should not be too thin, and the words printed on it should be covered. Don't be too thick, as the thickness of A4 be better. - workmanship, reasonable structure, professional and practical, can bring you convenience. Package list: 1 x silicone grease