SOAP STRAINER FOR 1/"4 OR 3/8" HOSE - Chemical strainer with built-in stainless steel check valve and step down hose barb to attach either 1/4 inch (6.35 mm) or 3/8 inch (9.53 mm) hoses. Attach the strainer to the hose and place it in the soap container. The strainer has an internal brass weight that keeps the strainer at the bottom of the container.