DeoxIT D5 helps bring old systems back to life. DeoxIT is a contact cleaner, conductivity enhancer and lubricant. It dissolves oxidation and corrosion on metal surfaces, fills in microscopic gaps and reseals surface for better contact to enhance the flow of electricity. It rejuvenates electrical equipment by improving connector performance and reliability. This excellent cleaner and deoxidizing agent helps protect your electronics equipment, yet does not contribute towards ozone depletion.