HomeParts & AccessoriesPro-Set 5/16″ (1/2″ -20) FEM X 1/4″ Male Adaptor Pro-Set 5/16″ (1/2″ -20) FEM X 1/4″ Male Adaptor$29.95 Pro-Set 5/16" (1/2" -20) FEM X 1/4" Male Adaptor quantity Buy now SKU: PRO-FEM Category: Parts & Accessories Product ID: 1897 Related products $149.00 DiversiTech Coil Guard CG-AER 19 fl oz (Clear Formula) $59.95 Nu-Calgon Cal-Blue Plus Micro Gas Leak Detector 1 Quart (32 fl oz / 946ml) $5.95 Miami Tech Nested Tab Collar 4”