scaffolding jack,bottom jack 1)Material ,Q235 2) Diameter:30-38mm 3)Length ... galvanized 1.the detailed introduction of the products:scaffolding jack,bottom jack 1)Material ,Q235 2) Diameter:30-38mm 3) ... galvanizedWe are a manufacturer of scaffoldings, couplers ,props ,base jack and other construction equipments . Pls feel free to contact us if ... ! 2. the detail size of the goods: scaffolding base jack