Metal ball 

A metal ball is a solid spherical object made from durable materials like steel, iron, aluminum, or brass. It has a smooth, hard surface and is designed for strength, weight, and long-lasting use.

Depending on its size and purpose, a metal ball can be used in machinery, engineering systems, sports training, or decorative design. Some are lightweight for precision equipment, while others are extremely heavy and used for industrial applications or strength exercises.

Because of its dense structure, a metal ball is resistant to impact, wear, and heat, making it reliable in demanding environments. Its perfectly round shape allows it to roll, rotate, or function smoothly in mechanical systems where balance and consistency are important.