Materials: Stainless Steel 316, 316L, 304, or 316Ti.Pressure Ratings: Typically 1000, 3000, 6000, to 10000 PSI.Temperature Range: High-performance fittings can operate from -425°F to +1200°F (-245°C to +649°C).Size range :Fractional (Inch): 1/16", 1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 2".