Switch up your Le Creuset cast iron cookware with this stylish Le Creuset Iridescent Knob 47mm. A beautiful compliment to a kitchen, the knob adds a luxury finish to your favourite piece of Le Creuset cookware. Le Creuset Iridescent Knob fits the following items: Le Creuset Cast Iron Round Casseroles 18 to 22cm. Le Creuset Cast Iron Oval Casseroles 23 and 25cm. Stylish and ergonomic, the knob is oven proof up to 260°C. Suitable for hand washing.