Eastman's 20" Steel Flex stainless steel water supply line is the standard in water supply lines for lavatory and kitchen faucets. Its quality is determined by what you can't see. The supply line features a non-toxic plastic core, a multi-filament braided nylon reinforcement, a clear vinyl outer shell and a grade 304 stainless steel braided exterior that is designed to prevent kinking and crimping. This flexible supply line resists corrosion and is easy to install.