Kaiser Bakeware offers the broadest product range in the bakeware industry offering both classic and creative shapes. Known for bakeware innovations, Kaiser invented the springform pan, the "intelligent round cake pan" and is the world's largest manufacturer. Kaiser bakeware products have been made to the highest standards of German craftsmanship for over 85 years. Manufactured from steel base metal, the products provide even and gentle heat distribution for even browning and baking. All Kaiser Bakeware pans are safe up to 450 degrees F in the oven. The Noblesse bakeware line features 2-layer nonstick interior for the perfect release and cleanup. Made of Heavy-gauge steel providing even and gentle heat distribution. The black exterior absorbs heat and provides better browning and shorter cooking times. The Leakproof bottom eliminates messy spills and the superior springform buckle provides the perfect release of baked goods, and is guaranteed for life. This set includes 4 Mini Springforms measuring 4 inches each.