The ISO 7241 B Series of quick disconnect couplers are used on a large spectrum of hydraulic applications with strenuous quality standards such as the aerospace, automotive, electronics industries. They are also recommended for general purpose, machine tools, mobile hydraulics, and other equipment applications. Our Series B couplers are interchangeable with all ISO 7241 B series couplings. Body Size: 1/4. Thread Size: 1/4 NPT Thread, Poppet Valve. This 1/4 coupler set consists of a male and female quick coupler. Features: Body Material: 316 Stainless Steel. Spring Material: 304 Stainless Steel. Locking Ball Material: 316 Stainless Steel. Stainless Steel Body is highly resistant to corrosion. Self Sealing Poppet Valve Seals Excellent Under High and Low Pressures. Interchangeable with all ISO 7241 B series couplings. Nominal Flow Rate: 3.17 GPM. Max Flow Rate: 6.34 GPM. 3600 PSI Rating. 14,500 PSI Burst Rating (Coupled). Seal Material: 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). Male Face Diameter .55 (13.97mm). Male Length: 1.37 (34.79mm). What's Included: Female Coupler, Male Coupler.