10 in (25 cm). Pro Health - Use less oil with easy-release. Pro Performance - Even-heat hard anodized aluminum for professional results. Pro Anodized - Exterior is hard anodized for long term toughness. Ceramic Aeternum Nonstick: Ceramic nonstick; Aluminum; Hard anodized. Eco: Eco-friendly. PFOA free. Oven: 400 degrees F (205 degrees C). 10 year guarantee. www.bialetti.com. Made in China.