SF50M0 Cha (color) Part number NT90853 2000 pieces per box Price for two boxes. I didn't see any rust at a glance. Due to the nature of industrial products, there may be some dirt, scratches, or scuffs due to product precision, transportation, and storage, but there are no problems with use. We appreciate your understanding. The packaging may show signs of aging, dirt, and discoloration. Thank you for your understanding.