The tradesman's number 1 multi-purpose lubricant, WD-40 is a multi-use product that offers solutions to most problems in the trade workplace or at home. WD-40's versatility means that the product performs as 5 products in one can, saving you time and money. Acting as a lubricant or protective film, this product assists in breaking through rust and corrosion and displacing moisture, making WD-40 the must-have necessity of any work site or shed.