actually WD 40 means : water displacement 40 is for the 40th recpie 70% stoddard solvent ,basicly paint thinner 10% alcohol 5% jasmine 5% wetting agent 10% propriety info, just a liitle bit of true trivia also UHMW stands ultra high molleclar weight nylon. tough stuff, machines resonably good but you cant grind on at all.Hope you enjoyed the intersting facts