Use the Cake Tester to check your cake has baked through. Made of stainless steel wire and polypropylene. By Ateco. Since 1905, Ateco has supplied fine restaurants and bakeries with quality built, specialty baking tools.Ateco products are internationally renowned for their high quality. When you use Ateco products, youre not only enjoying quality craftsmanship, youre also enjoying quality design; the products are a result of over one hundred years and four generations of innovation and development.