Starting that electric project that you have always wanted to complete can be jump-started when you buy all of the parts that you need, and regardless of the type of electric project you have on your mind, you are very likely to need a solenoid at some point. Made from powdered iron, solid steel, or solid iron, these devices have multiple uses. For instance, you can choose to use them as miniature receiving antennas, as inductors in electronic circuits, or as electromagnets. A starter solenoid can aid in projects that need powering up, while a solenoid valve is a more versatile item that you could use for diverse projects. Various reliable sellers on eBay put solenoids for sale in both new and used condition, and you can virtually find anything you may need thanks to the huge selection available. Other uses for a solenoid include irrigation sprinkler systems or central heating, so if you are looking for a replacement for these or any other purposes, always be sure that you purchase one that fits.