The HammerSTOP supply line hose eliminates water hammer (banging pipes) with an in-line patented piston that absorbs unexpected surges in water pressure. The HammerSTOP features a water hammer arrester built into a 5 ft. supply line for an ice maker. Unlike any other water connector hose, HammerSTOP features a proprietary UltraCore liner, resistant to chemicals and leaves no odor or taste in the water; it’s also lead and BPA free!