WD-40 can be used to lubricate moving parts, such as hinges, locks, and tools. A quick spray can provide squeak relief for automotive doors, windshield wipers, swinging gates, sticking ladders, storm doors, pruning shears, roof ventilators, fire alarm boxes, and folding chairs.
Apply WD-40 to metal surfaces to prevent rust and corrosion. It helps protect tools, outdoor equipment, and other metal objects