WD-40 aerosol multi-purpose product, but with a Smart Straw designed for precision application. It’s great for gears, hinges, spark plugs, power tools, machine mechanisms and any other tight spaces. Simply aim and spray, and let the formula do its work. And just like the original Multi-Use Product, this aerosol multi-purpose product displaces moisture, protecting from rust and corrosion, and lubricating parts to keep equipment running smoothly. It simply flip the Smart Straw down against the can, and you can straightaway access the wide spray nozzle for larger areas.