20L Heavy duty industrial size is ideal for soaking and dipping. Plus 3 x 500ml Sprayers. Plus Drum Tap. Soak parts to clean without disassembly. Lubricates and protects industrial equipment, cleans and removes residue from moulds, penetrates stuck rigging hardware. WD-40 can be used for loosening sticky hinges or joints, lubricating bearings and can even remove crayon from the walls. WD-40 can also break down grease and oil and will protect parts and tools from corrosion.