Size: 3/4 Body, 3/4 NPT Thread, Poppet Valve. This 3/4 coupler set consists of a male and female quick coupler. Body Material: Brass material for corrosion resistance. Spring Material: 304 Stainless Steel. Locking Ball Material: 316 Stainless Steel. Self Sealing Poppet Valve Seals Excellent Under High and Low Pressures. Interchangeable with all ISO 7241 B series couplings. 2,000 PSI Rating. Nominal Flow Rate: 28 GPM. Max Flow Rate: 58.12 GPM. Seal Type: Viton FKM. Temperature Range: -15°F to +400°F. Female Face Diameter 2.05 (44mm). Female Length: 3.54 (90mm). Hex: 1.34 (27mm). Male Face Diameter 1.24 (31.5mm). Male Length: 2.28 (58mm). Applications: Hydraulic fluids, Water Diesel / Petroleum. Included: Female Coupler, Male Coupler.