Size: 1/4 Body, 1/4 NPT Thread, Poppet Valve. This 1/4 female coupler connects to its male equivalent. 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. 3,000 PSI Rating. Nominal Flow Rate: 3.17 GPM. Max Flow Rate: 6.34 GPM. Seal Type: Viton FKM. Temperature Range: -15°F to +400°F. Female Face Diameter 1.1 (27.94mm). Female Length: 2.26 (57.4mm). Hex: 0.74 (18.79mm). Applications: Hydraulic fluids, Water Diesel / Petroleum. Included: Female Coupler.