Body Coupler Ball SetApache Mills S20 Series 39040925 Body Coupler Ball Set, 1 2 in, FNPT, 3000 psi Pressure, Steel Sets have an ISO 5675 body and include a coupler plug combination primarily used on agricultural and construction equipment. If the coupler is permanently mounted, the one way sleeve design allows implement break away without hose damage. Critical parts are hardened for long service life. Couplers interchangeable with Parker Pioneer 4200 series.