200 pieces 10mm carbon steel balls, versatile and environmentally friendly, suitable for mechanical engineering, home workshop, and ball bearing manufacturing.

["Dimensions: The diameter of the balls is 0.39 inches.", "Quantity: 200 pieces per pack.", "Material: Made of high-quality carbon steel, with excellent hardness and toughness to effectively protect against wear and impacts, allowing for a long service life and extending maintenance intervals of the equipment.", "Applications: The balls can be used not only in professional machinery, but are also excellent for creative DIY projects. They offer a wide range of applications for both hobbyists and professionals.", "Features: Meets environmental standards, production and application are green and pollutant-free."]