Likewise Fritsch, Retsch offers high-quality ball milling vials with different capacities (12, 25, 50, 50, 125, 250, and 500 mL) and balls of different diameters (5–40 mm), as exemplified in Fig. 3.23. These milling tools can be made of hardened steel as well as other different materials such as carbides, nitrides, and oxides.