UniQue HY510 Thermal Heatsink Compound Paste - 25g, ISOL 6 Syringe, Thermal Coupling Of Electrical Devices, Used To Heat Sink Base, Efficient Cooling, Mount Studs Of Transistors, Diodes, And Rectifiers, Environmental Friendly, No Corrosion, No Damage To Unit, Metal-Free And Non-Electrical Conductive, Once Applied Can Last At Least For Years, No Warranty