Like all Lee products the Lee Round Ball Mould (Handles Included) - Double Cavity is an exceptional value. For reloading and casting purposes this mould is ideal. The mould is made from high-quality aluminum that resists rusting is lighter in weight compared to moulds made out of steel and iron and can heat up and cool down more quickly.Additional benefits of this mould include the CNC-machined block halves that reduce risk of fatigue and produce smooth round bullets. Unlike other brands this ball mould is sold with strong and durable handles.