Cakie 32012, Clearwaer Quality glass  The use of premium tempered glass make these lids hardy and durable. Premium grade steel  The use of high-quality stainless steel for the rim offers durability as well as a perfect fit for the NuWave Duralon cookware. Safe to handle  No more fears of burns and singes since the cool-to-the-touch stainless steel handle makes it safe to use and touch the lid during cooking. Easy usage  The well-placed hole on the glass lid allows excess steam to be vented easily so you can control the cooking temperature better. For venting, you can cook just the way you want without over-heating the cookware. Eco-friendly technology  Special focus on chemical-free materials and eco-friendly technology make lids safe for everyday use.