P51 is a penetrating oil developed for a multitude of uses. This oil packs a punch, as the pressurized content provide the best results during use. Not only does this oil help protect, but it also offers the additional benefit of exceptional cleaning. Tested by some of the best marksmen in South Africa, this oil was put through its paces with a large number of tests resulting in the development of a superior product to service our hunting legacy. Avoid using this oil on o-rings and rubber items as it might cause damage to rubber parts."BRING FORTH THE MARKSMAN in you"