1.Name:scaffolding base jack 2.Diameter:30,32,34,36,38mm 3.Surface:galvanized, ... pcs 5.Material:Q23 Scaffolding base jack The base jack of our factory is a high quality cost effective alternative to traditional levelly ... feel free to contact us ! IF YOU NEED OUR BASE JACK, PLS CONTACT ME IN YOUR FREE TIME!Contact personal:Vicky ...