190kg carbon steel portable six wheeled stair climbing folding adjustable cart climb hand truck dolly trolley with backup wheels

model : climbing folding overall length:44.5 in(11cm) frame width:14.5 in(37cm) pipe thickness:0.05in(1.2mm) maximum load:190 kg(420 lbs) weight:14.3lbs(6.5kg) height when folded : 30 in (76cm)