FL-449-81343 - This is a 1 ounce [28gr] tube of PERMATEX Anti-Seize Lubricant. Perfect for spark plug installation on aluminum cylinder head engines - prevents corrosion, eliminates galling & seizing, permits easy disassembly, will not wash away and withstands heat up to 1600 deg F [870 deg C]. This tube is big enough to last years.... We recommend using it on all stainless fasteners also.