1.Formwork wing nut for scaffolding system 2.Material:ductile iron 3. ... :0.3~1.36kg 4.Surface:Galvanized Product detail:1.Formwork wing nut for scaffolding system2.Material:ductile iron3.Product net ... .Surface:Galvanized,or zinc plated5.Diameter:80,90,100 and 120mm, or as per your requirement.5.anti-rust, skidproof, high ...