Bore Tech's new Tef Dri is a revolutionary new dry lubricant. Tef Dri is composed of sub-micron particles of Teflon® in a quickly evaporating carrier. The carrier evaporates after transporting the Teflon® into the most remote areas leaving a film of Teflon® in the pores of the metal. The dry film is unsurpassed lubrication that will not freeze, or attract harmful dust and debris. Originally designed to be a dry, non dirt attracting, all temperature lubricant for pistol and rifle magazines Tef-Dri is excellent for folding knives, fishing gear, rifle bolts or any place a tough dry lubricant is needed.