Alemite 313650 is a 3/8 in. Ptf SAE short two baffles breather grease fitting that is 1.5 in. Long and has a shank length of 0.35 in. It exceeds the 72 hour salt spray test and has trivalent zinc plating. The breather has no airflow restrictions and helps maintain proper pressure. Alemite Breathers are used with transmissions, differentials, speed reducers, axles, gear housings and similar applications. As The inventor of the Zerk fitting, Alemite is a recognized global leader in supplying fittings for automotive and industrial use. Alemite fittings conform to SAE J534 standards for automotive OEM use and Alemite Manufacturing is TS/ISO 16949 certified.