... without ground floor structure,ensuring ground without obstacle This car lift: Model GL-4.5-2F1 Max. lifting weight(Kg) 4500 ... optional Gantry design, clear floor .Drive by hydraulic power unit; Post and cross bar formed at one time; Steady up and ... ; chains to lift, steel rope to balance; each post with safety device, ups release, and downs lock. Height limitation security lever two post gantry Lift