This HPS Billet Aluminum Hose Union is designed to connect silicone or rubber hoses together for a tight, leak-free seal. This anodized adapter fitting is machined from 6061 grade aluminum, making it both light-weight and durable for use with coolant, air, or fuel. The stopper at the middle of the ribbed joiner helps center hoses for an even application on both ends. Its compact size allows for connections in tight spaces or with back-to-back bends.