Staub Wok with Glass Lid and Tempura Rack, 6 Quart, Royal Blue Cast-iron wok's ceramic base can be used on any surface Durable black matte enamel interior doesn't need seasoning Features cast-iron handles, glass lid with stainless-steel knob, and stainless-steel rack Hand wash and dry; best used at low to medium settings; oven-safe to 500 6-quart wok; lifetime limited warranty