4mm 200pcs Solid Pure Copper Balls - Brass Ball Bead

Are 4mm solid copper balls (200 pcs) ideal for precision machining, valves, and crafts?
✔️ 200 pieces per pack, 4 mm diameter solid copper balls for bearings, valves, and crafts

These 4 mm solid copper balls come in a 200-piece pack, crafted from high-purity copper (Cu H62/H65) for precise sizing and reliable performance in machinery, valves, medical equipment, automotive parts, and decorative artware. Available diameters range from 1 to 20 mm in various listings, allowing you to pick the right ball for your project. Whether you're balancing a rotor, sealing a valve stem, or crafting metal beads, these copper balls offer consistent dimensions and great machinability, helping your assemblies run smoothly and with a clean aesthetic. This handy pack is ideal for durable, precise results in real-world setups.

✅ 200 pcs per pack; 4 mm diameter solid copper balls for machining and crafts
✅ Material: solid copper Cu H62/H65; good conductivity and easy machinability
✅ Diameter range 1-20 mm available in other listings; 4 mm in this pack
✅ Applications: machinery, valves, medical equipment, automotive, artware
✅ Finish: natural copper tone; ready-to-machine, not plated
💡 What is a solid copper ball used for in industrial and hobby projects? These copper balls are handy components with wide use in both metalworking and craft work. - Used for precision balancing and weight distribution in small assemblies - Employed in valve cores and fittings where copper’s ductility helps seal and fit - Popular in jewelry making and decorative beadwork for a warm metallic look - Useful in electrical and thermal applications due to copper’s conductivity