This precision-engineered brass barb fitting serves as a reliable reducer for connecting hoses of different diameters, specifically from 3/8 inch ID to 5/16 inch ID. Crafted from durable brass material, this versatile fitting is designed to handle multiple fluid types including oil, fuel, water, gas, and air, making it ideal for various applications from automotive to marine use. The barbed design ensures a secure connection when properly installed with hose clamps, helping prevent leaks at connection points. Perfect for boats, vehicles, and general fluid transfer systems where a size reduction is needed. The robust brass construction offers excellent corrosion resistance and long-term durability under normal operating conditions. This reducer fitting provides a professional solution for your fluid management needs, whether you're working on engine systems, fuel lines, or water circulation setups. Material: Brass Hose ID A: 3/8” Barb Hose ID B: 5/16” Bar