Smooth as Graphite, Hard as Iron and Long Lasting. Used to Convert Scrap into Suitable Shape for Rolling Sheet or Drawing Wire. Graphite is Integrated Into the Molds Resulting Into an Extra Smooth Finish. Mold Features Single 7 x 25mm Rectangular Shape Cavity. Precious Metals are Melted Into the Crucible and Poured Into the Mold. SIZE & CAPACITY: 7 x 25 x 40mm : 100grams. MATERIAL: Premium Gray Cast Iron Ingot Mold. Is Designed for High Heat Temperatures. Made in Europe. Rosenthal Collection is a registered trademark protected by US Trademark Law.