Size Range: 00-90 to 10-32 Unified M1 to M5 in Metric.Specifications: IFI, ISO, DIN, JIS, JCIS and SpecialsMaterial : Stainless Steel 18-8、410、430 and 316, Steel 1018、1022, Alloy A286, and Brass, North East and WiLi manufacture nearly every head, drive and thread configuration possible and are adding new products to their lines continuously.email : lesia0912athotmail.com