Professional Grade Tempered Glass with a Steam-Release Vent and Stainless Steel Rim * Colorless Transparent Glass for Clear Viewing * 9-inch (23cm) Which Fits Most Electric Pressure Cooker Inserts, 6Qt/6L or 5Qt/5L Size * Fits Cuisinart CPC-600, Nesco PC6-25P, Fagor 6-Quart, Instant Pot IP-LUX60/50, CSG60/50 * Dishwasher-Safe and Durable