... and Gold colour),Self Colour2.Size:42mm,48.3mm,50mm,60mm,63mm,73mm,89mm3.Certificate: ... be provided.drop forged coupler Dimensions: 48.3 x 48.3mm (1 29 / 32" x 1 29 / 32" ) Material: ... drop forged carbon steel Super qualitydrop forged coupler:1) Dimensions: 48.3 x 48 ... .3mm (1 29 / 32" x 1 29 / 32" )2) ...