Beam using high strength H steel . Platform overall molding, bearing up to 6.5 tons . Manual mechanical reset insurance mechanism. Dinggao, a professional four post alignment lift and rack manufacturer in China, our essential qualities are safety,reliable and high efficiency synchronization. Export-type pneumatic safety components have long service life and high synchronization efficiency. Standard oil-water separator with pressure gauge. The wire rope fracture protective mechanism can effectively prevent the cable drop fast when fracture. Optional slide plate for four-wheel alignment. Optional hydraulic rolling jack, bearing 14000 pounds(6.5tons),convenient adjustment of the chassis and disassembling tyres. Yellow warning parts on the slope, at the same time of warning also protect the ground friction. Four columns secure level accurate adjustable.