The WD-40 Specialist Contact Cleaner Aerosol With Smart Straw 400ml is a high-quality, fast-drying, non-conductive spray thats perfect for removing oil, dirt, flux residue and condensation from sensitive electronics and electrical equipment. It rapidly penetrates into hard to reach areas and dries quickly, without leaving any residue. This product also features a smart straw which allows for precision spray control and the ability to reach tight spots. Ideal for use on circuit boards, controls, switches, precision instruments and electric panels.