This is the future of Black Oxide. TRU TEMP® 2ND GEN achieves a superior dark black finish that will not rub off when handled. The clean-to-the-touch magnetite coating is non-dimensional (1 micron thick) and ideal for machined components, non-machined components, powdered metals, MIM, tooling, gears, sucker rods and more. Operating at a safe temperature range of 200° – 210°F, TRU TEMP® 2ND GEN achieves a superior dark black finish that will not rub off when handled.