This grey connection pipe water supply line is made of super high tensile braided stainless steel and protects the PVC inner tube, ensuring maximum pressure and performance. Never worry that your hose will burst again, and avoid floods. The material construction of the stainless steel supply line is lead-free and safe for water usage in the kitchen and bathroom. In summary, hassle-free water supply connectors and flexibility make the perfect combination. The Alton Faucet Hose Is Quick And Easy To Install. Clear, simple directions allowing you to DIY and save (see below for clear instructions)! Connect to the toilet or sink on your own. Compatible With Most Standard-Size Faucets. Features 1/2-inch nut, lead-free. Fit perfectly for bathroom, toilet, washbasin, water heater, base faucet, and hot & cold water supply.