The Allstar Performance Petcock 1/4 NPT is a precision-designed brass valve, perfect for Allstar breather and overflow tanks, and is also ideal for conveniently draining coolant from engines. Featuring 1/4-inch NPT threads, this durable petcock ensures a secure and leak-free fit. With its compact dimensions of 4.5 x 3.5 x 0.6 inches, it is easy to install and integrates seamlessly into your vehicle's systems, providing a reliable solution for fluid management in various applications.