The 4 Plug-4 Hose Barb from Fittings Unlimited Inc is a versatile fitting ideal for connecting hoses in various fluid systems. With a 4mm plug and a 4mm hose barb, it ensures a secure and leak-resistant connection. Made from durable materials, this fitting is designed to withstand high pressures and temperatures, making it suitable for both commercial and residential applications. It meets industry standards for safety and reliability, and its compact design allows for easy installation in tight spaces.