2011 popular pure PC lightweight luggage trolley A. ISO,BSCI B. 28'',24'',20'' C. Aluminum trolley D. plane wheels,TSA lock 2011 popular ... aluminum design, S/28'' and S/24'' with 2 sections trolley and S/20'' with 3 sections trolleyWheels 4 plane wheels ... temperature resistant, bitter cold resistant, waterproof, greaseproof and cleanable.B. Trolley is made by pure aluminum which is not only light ...