Button Head Coupler, For Use With Large 5/8 In. dia. Button Head Fittings, Size 7/16 In. -27, Connection 7/16 In. FNPT, Max. Pressure 4000 psi, Min. Burst Pressure 12, 000 psi, Working Pressure 4000 psi, Material Steel, Voltage NA, Features Special Access Coupler for Pull On, Push On or Hook On Service, Includes N/A. This item has been restricted from sale in the following state (s): []