The Gun Butter Lite Pen Oiler puts a precise drop of lighter-viscosity synthetic gun oil exactly where you want it. The fine needle applicator meters oil one drop at a time onto pins, springs, detents, slide rails and trigger parts, with no over-application and no mess. Gun Butter is a full-synthetic firearm lubricant engineered for high film strength, a wide operating-temperature range and long-lasting corrosion protection. It has been used since 2003 in competition, law enforcement and military service in extreme weather. The Lite formula keeps those properties in a thinner oil that flows into close-tolerance assemblies and stays fluid in cold weather, where heavier oils thicken. The 1/4 fl oz pen fits in a range bag, cleaning kit or pocket. Features: Lighter formula for fine mechanisms and close-tolerance parts Performs in low temperatures where heavier oils thicken Fine needle pen applicator Full synthetic, non-toxic formula Safe on all finishes 1/4 fl oz Use: Clean and dry the part first, then apply a small amount to wear points. Follow your firearm manufacturer's lubrication points and wipe off any excess.