Graphite thermal grease, thermal conductivity is 1.93W/m-k~2.15W/m-k. It has good electric insulating, which can breakdown 10Kv voltage. It is made of high quality compound silicone material which is durable and safe. The length of the thermal grease is 12.3cm, the width is 8.5cm and the height is 0.9cm. It is suitable for the CPU and graphics card of notebook computers and desktop computers where heat is needed. Item Name: Radiator Material:Silicone USB Voltage: 10Kv Size:12.3cmx8.5cmx0.9cm/4.84inx3.35inx0.35in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 10 X Thermal Greases