... wheel space wider, center of gravity changed,shaft form renewed, so the machine body is lighter and more flexible, reduced ... Gear Driven, Automatically Clutch7Markingwidth50,80,100,120,150,200,230,250,300mm,the machine is more suitable for marking 450mm ... crossing.2.Lighter:Through repeatedly gravity test, rechoose new shaft, the marking machine is much lighter, reduced operator’s working intensity. ...