Diameter 0.9-80mm High Precision Pure Brass Solid Copper Ball Round And Durable
2) Gently scrape the surface with a knife, if the inside colour is yellow or red, it is made of copper; if the inside is white or black, it is iron or other inferior materials, and it is fake.
Application Areas:
Valve, Sprayer, Instrument, Pressure gauge, Water gauge, Carburetor, Electrical fittings, etc.