... , BSW, ISO3. Production Description: 1) Color: Gold, Blue, Purple, Green, Ti natual etc 2) Size:M3~32 Or according to the ... .9 4) Technique: Forged, Rolled.4. Head Styles: Hex socket head ,Taper head ,Hex flange head ,Torx head ,Button head ,Cup head ,Flange head5.Surface Treatment: Polishing, Anodizing, Black ...