Sioux Chief Mfg 660-2 1/2-Inch MIP Thread Mini Rester Residential Water Hammer Arrester<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Straight water hammer arrester</li><li>Install on any new roughin or retrofit installation with 1/2-Inch FIP fittings</li><li>AA size</li><li>1/2-Inch male iron pipe connection</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41KPPq1p6UL.jpg" noproxy>