... ,surface powder coating. 2.Fittings is al-alloy castings. Machine suspension system kits1.Electric cabinet series:1.5mm high-quality lengzha steel ... is 500,1000,1500,2000mm,can freely form different suspension system,casting surface powder coating processing,can strengthen the corrosion resistance ... .5.Used for low-load medium load of suspension system.Photos: Suspension system kits