H.D.G. J Type Anchor Bolt Model:M8,M10,M12,M16,M20, ... Thread surface is smooth, nuts are easy to screw. ... H.D.G. J Type Anchor Bolt 1. Place of Origin: Tianjin, Mainland ... Steel or Stainless Steel.Surface Treatment: Hot Dipped Galvanization. (E.G. and Plain are also available.)Diameter: M8 to M48Length: 125mm ... Cartons 2) Small Sacks + Pallets 3) As Buyers' Requirements H.D.G. J Type Anchor Bolt