1 inch ISO body size, 1 inch NPT thread, Poppet valve , Female coupler dimensions: 2., 05 inch OD, 3., 9 inch long , Male coupler dimensions: 1., 23 inch OD, 2., 58 inch long Pioneer Standard Series Hydraulic Quick Coupler, 1/4 in. Single-Acting Sleeve Set at Tractor Supply Co Agriculture Tractor Coupler Pioneer, Agriculture Quick Couplers, Breakaway Sleeve, ISO 5675 / ISO 7241 - 4200 Series | Parker NA 1 Inch Pioneer Coupler Technical Specifications ; Flow Rate: 3 to 50 gal/min ; Valve Type: Poppet, Ball ; Vacuum Pressure Rating: No ; Body Size: 1/4 to 1 inch ; Body Material: Steel They are interchangeable with all 1-inch body ISO 5675 series including ball seat valve, poppet seal, push-pull couplings. This series of couplers are the most common quick connect couplers used in the agriculture, construction and logging industries. They are interchangeable with all ISO 5675 series including ball seat valve, poppet seal, push-pull couplings This series of couplers are used in the agriculture, construction and logging industries.