Watts A-260C Brass Flare Contractor, 10-Pack 1/2-Inch brass short rod flare nut 10-pack Brass flare fittings are economical, reusable and resistant to mechanical pullout For use with copper, brass, aluminum and welded steel hydraulic tubing that can be flared Commonly used for gasoline, grease, oil, water, vacuum, air lines, LP and natural gas Not recommended for polybutylene or soft plastic tubing