Garden hose couplings are essential hose couplings, hose couplings are often installed on the edge of the hose and are the connection between the faucet fitting and the hose. These hose couplings are available in different materials, brass hose couplings, stainless steel hose fittings, aluminum hose connectors and more. Besides, different sizes match different water-taps. Common sizes for water-tap and their fittings are 3/8", 3/4", 1/2" and 5/8". The hose is the whole pipe that carries the water to the garden, and the hose also comes in different sizes and lengths, you can click on our hose series for details.