The Watts 3/4" LF15M2.B34 Lead-Free Water Hammer Arrestor is now available. It's the quieter plumbing system option. This small gadget lessens noise and guards against damage by efficiently absorbing water hammer shocks. Its lead-free structure and 3/4" size guarantee the effectiveness and safety of your water supply system. Replace your old plumbing system with the Watts LF15M2.B34 for a dependable and quiet operation.