... 3.Prompt delivery 4.Different sizes Decorative solid brass ball, solid copper ball, copper coated ball1) Diameter from 0.8mm ... Applications: be widely used for fuel injectors, sprayers, valves, transmission system, jewelly, bracelet, earrings, necklaces, electronics, switch, touch-spot, military ... 7) Nonstandard dimensions customized are acceptable. decorative solid brass ball 1.2mm 2mm 4mm 5mm 6mm