The Prier 479-06 6 in. Anti-Siphon Wall Hydrant is a reliable and durable rock switch with a 3/4 inch inlet. This high-quality product from the trusted brand Prier is designed to withstand 1000 hours of continuous operation, making it a great choice for various electrical applications. Its compact dimensions of 6 inches in height and 4 inches in width ensure that it can easily be installed in tight spaces while still providing efficient and reliable switching performance.