Product Description Specifications: Thermal Conductivity（W / m-k）：79 Color：Silver Specific Gravity（25℃）：6.77 Useable Temperature Range：-3℃ / 140℃ Content：1g Electrically Conductive：YES Harmless：YESSilver King 1g THERMALRIGHT Silver King is the first heat conducting medium, which is worthy of its name. It is the first thermal compound that consists of 100% liquid metal alloy. It is liquid at room temperature (like mercury), but it is absolutely non-toxic and has a high moistening ability for several materials apart from aluminum. The THERMALRIGHT Silver King is especially recommended for nickel-plated copper. THERMALRIGHT Silver King contains no non-metallic additives (like silicone, oxides, etc.) at all. It also does not contain any solid particles. Due to these properties, THERMALRIGHT Silver King surpasses the best high-performance heat conducting pastes by a multiple. This product for overclockers and gaming players. Do not use with Aluminum.