WD40: Use WD-40 Specialist Contact Cleaner to clean oil, dirt, flux residue or condensation from electronics and equipment such as E bike connectors, Lights, Cycle Computers, E shift systems and more without leaving any residue.• 360° valve, use can upright or upside down• Spray from the can in 2 ways• Straw down for a wide spray• Straw engaged for a precision spray• Use on accessories or equipment that have circuitry contamination such as moisture, flux or dirt• Safe on circuits, leaves no harmful residue400ml