Check the listing for details. 2 PCS EFIELD S.Steel Water Hammer Arrestor For Washing Machine, 3/4 Inch MHT. Condition: New. Listed at 24.99 USD. 2 PCS Stainless Steel Water Hammer Arrester For Washing Machine Supply Valves or Directly to Washing Machine Tube Connection:3/4 inch Female Swivel Hose Thread x 3/4 inch Male Hose Thread;Max Working Pressure: 250 PSI ,Low Lead Brass , cUPC and NSF listed.Can be Installed Horizontally or VerticallyAborb the Unstable Water Shock and Noise to Protect Washing Machine Control System2 PCS Stainless Steel Water Hammer Arrester For Washing Machine Supply Valves or Directly to Washing Machine Tube Connection:3/4 inch Female Swivel Hose Thread x 3/4 inch Male Hose Thread;Max Working Pressure: 250 PSI ,Low Lead Brass , cUPC and NSF listed.Can be Installed Horizontally or VerticallyAborb the Unstable Water Shock and Noise to Protect Washing Machine Control System