This product is a pine rust lubricant commonly known as“Rust remover but not chemical acid that can be sprayed to remove rust.”. The role of this product is: cleaning and lubrication machinery and parts, rust, loose screws and other tight parts, to eliminate abnormal noise. Derusting is only used to assist physical derusting, with cleaning cloth or sanding paper. This product quickly infiltrates the rusted parts to play a loose effect, eliminate abnormal sound between metal friction eliminate abnormal sound, mechanical transmission parts, door locks, such as lubrication, clean and clean oil sludge.