21757 Unipress 1/2" tube x 3/8 male npt thread, nylon tube fitting, push to connect 21757-DA 21757-00. All parts come with a minimum 30 day warranty against manufacture defects. Can't find what your looking for? Contact us at 855-262-7286 and our staff will assist you with the parts you need. Minimum online orders of $10.00