The Phefop Universal 4 Post Starter Solenoid is designed to provide a reliable and efficient starting solution for various quadcopters and hexacopters. This compact and versatile starter solenoid features 4 durable, 1/4-inch connectors that allow for easy connection to 1/16-inch or 5/16-inch receiver antennas. Its 12V power supply ensures consistent and powerful starting signals, even in challenging weather conditions. The mounting bracket makes it simple to install the starter solenoid directly on the motor props, ensuring a secure and stable connection. This starter solenoid is compatible with a wide range of RC aircraft models, including the 1-513075, 117-1197, 513075, and 212655 series, making it an essential addition to any RC enthusiast's collection.