3-in-1 in drop size wd40 100ml multi-use oil 3-in-1 100ml. the original formula that works for more than one century, now in drop format for exact application on all types of locations: lubricates, cleans and protects against rust. it is the ideal solution to preserve and extend the life of machines, tools, lubricates mechanisms, eliminates grinding, cleans metal and protects mechanical obstruction and damage elements.