high qualtiy aluminum rivet 1.material: aluminm and iron 2.surface: zinc,nickel,chrome high quality aluminum rivetmaterial: aluminum and irondelivery: 12pcs in one box and 12boxes in one carton RER SIZE PCS/PCS218171RIVET3.2×6652181724×10452181734×13402181744×16352181754×18322181764.8×10302181774.8×16252181784.8×18222181794.8×20202181804×846 aluminum rivet