Thermaltake TG-30 Thermal Compound 4g – Thermal grease with diamond powder inside for best thermal conductivity – Provided spreader makes it easier to apply thermal grease on the contact surface of the heatsink – Thermal Conductivity: 4.5 W/m-k – Colour: Grey – Weight: 4 grams – Viscosity: 76 Pa-s – Thermal Impedance: 0.185°C -in²/W – Density: 2.55 g/cm³ – Model: CL-O023-GROSGM-A – 12 Months Limited Warranty