copper part,ISO9000/9001/9004/2000Certification .We can offer you samples after you accept our price. We are specialized in all various kinds of mechanical components, precision parts,copper parts:1). Material:Steel.2).Weight:0.6kg.3).Size:according to all customers' requirements.4). Finish: black oxide, zinc/nickel/chrome plating, power coating, passivate, oiled to prevent rust, and so on.5). ...