The same chlorinated paraffin cutting oil that everyone else makes. Yes, it'll take that high-pressure cutting job, but in the process it'll also stain and rust every detail it comes close to. Friends, it's 2020! Can't we really make high pressure cutting oil that WILL NOT CAUSE RUST! If you don't clean your tools within two hours of using this product, they will rust! I could almost forgive them for that, except it's NEVER mentioned on the label.