Steam fresh vegetables to enhance their flavor and preserve nutrients. Steamer basket expands up to 9-inch in diameter to fit a variety of pots. When preparing large vegetables such as corn on the cob, the center post is removable. Stainless steel. By Amco. With unique, patented kitchen products Amco's devotion to innovation has driven new industry standards and redefined categories. They continue to revolutionize the market with ingenious gadgets that simplify and enhance the culinary experience. With a team of in-house designers whose sole purpose is to conceptualize and design new kitchen tools, Amco continues to be at the forefront of innovative, efficient and timeless kitchenware products.