Swiss Diamond Nonstick Wok with Lid - 11" Model #61128c: 3.7 L (3.9 QT) / 28 cm (11") Patented nonstick coating reinforced with real diamond crystals (PFOA-free) Made in Switzerland; Cast aluminum; Oven-safe up to 500 degrees F Stay-cool ergonomic handle provides a safe, comfortable grip See-through tempered glass lid with knob that doubles as a steam vent