The Laguna Multi-Hose Adapter is the perfect solution for when you need to connect two hoses of different diameters together. It?s easy to install and provides a secure connection. The adapter is designed for both metric or imperial hose sizes, from 6 mm to 25 mm (1/4 in to 1 in) in diameter. Other size available: - PT677 Laguna Multi-Hose Adapter, 19 mm to 38 mm ( in to 1 in) diameter,