This is a one ounce bottle of Pacer Rail Zip. Pacer Rail Zip is a high-tech concentrated track cleaner and corrosion inhibitor that penetrates existing corrosion layers and restores electrical conductivity to all model railroad tracks. It eliminates arching and sparking to assure total layout integrity. The uses for Rail Zip 2 extend beyond model railroading! You can use Rail Zip 2 anywhere you have electrical contacts and corrosion problems, such as slot car tracks, auto and motorcycle electrical connections, as well as plugs and fuses can all remain trouble free making sure your new, classic or antique electrical systems won’t cause problems.