DeoxIT® D-Series D5 Electronics Contact Cleaner Spray, 5% solution, Flushing Action, Original Low-Med-High Adjustable Valve, 142 g. Fast Acting Deoxidizing Solution That Cleans, Protects, Lubricates & Improves Conductivity On All Metal Connectors & Contacts, Improves Electronics & Electrical Metal Connections, Use As A General Treatment For Connectors, Contacts & Other Metal Surfaces, & On Non-Critical Metal Surfaces With Severe Oxidation & Corrosion, Dissolves Corrosion, Seals & Protects Surfaces, Rejuvenates & Improves Performance & Reliability, Safe On Plastics, Cleaner Audio, Clear Video & Reliable Data, Guaranteed.