The Kershaw KEROIL Knife Oil is engineered to protect and enhance your knife’s folding mechanism. The oil allows for a smoother operation, works to prevent corrosion SMT (Sub-Micron Technology) absorbs into pores of metals, for an even conditioning, and features a non-migrating, non-toxic formula. The bottle has 0.4 fl. oz. of oil, and is non-toxic, but consuming oil is not recommended. Made in USA.