Product Information Material: Nylon Seal: EPDM Male Thread: NPTF Select a Product Part NumberMale Thread SizeTube OD 65056018WP23/8"3/8" 65055611WP21/8"1/4" 65055614WP21/4"1/4" 65056218WP23/8"1/2" 65056014WP21/4"3/8" 65056222WP21/2"1/2"