Brass 【Solid Brass Faucet Adapter】 The faucet adapter is made of solid brass, which gives it a sturdy and durable body compared to plastic or thin aluminum. This brass structure has no seams or matte surface, ensuring that it does not leak. 【Double 1/4” headed design and locking cap】 Each hose adapter has two 1/4" connectors, making it more convenient and better designed for your garden compared to conventional single-headed adapters. The hose adapter connects to a 1/4" pipe through the hook-shaped part and locks the pipe in place with the adapter's locking cap. The locking cap can be adjusted for tightness to accommodate sizes of pipes, preventing slippage and leaks. 【US Standard 3/4" Thread】 The female thread adapter is designed with an American Standard 3/4" thread, which is suitable for 3/4" standard threads (3/4" GHT, 3/4" NH, 3/4" NPT). It is widely used for garden connectors, outdoor faucets, hose splitters, garden filters, garden timers, and so on. 【Suitable for 1/4“ hoses/tubing】 This adapter is compatible with 1/4” tubing, including 1/4“ PE tubing, 1/4” (outer diameter 7mm, inner diameter 4mm) PVC drip tubing, and 1/4“ (outer diameter 6mm, inner diameter 4mm) PU tubing. 【Product Inclusions and Applications】 The product includes 4 brass adapters, 4 washers, and 4 filters.