Dear,Torsion axle 3 pieces Sample and afterwards 100pcs/3months.specifications: (See the attached Image)• Beem length = 2,20 m.• Screw = 6 pieces.• With wire brake.• Loading capacity = 2000 kg.• Speed = 80 km/h.• Thickness beem = 3mm to 5mm.• Inside beem = spring. Show More