we can offer all sizes of Semi-tubular rivets 1) Size: all sizes2) Standards: DIN.ANSI,ISO,JIS,Special Design3) Material:C1022 4) Surface: Plain,zine-plated,Ni-plated,RadiantPlated and others5) Packing: bulk, box packing, Carton6)Payment :30% T/T in advance,delivery against the blance.