... type online material carrier: 1:ISO9001.CRCC 2:PATENT XBY type online material carrier:1:ISO9001 ... hook close or unload rail.Basic structure: 1, crank 2, ratchet up to 3, big load crank shaft, ... four small load crank shaft, 5 nylon wheel 6, auxiliary support hook 7, the implementation of ... frog slingThree, the basic parameters:1, maximum tension: 2 t2, operation force: 20 kg/single arm, 10 kg ...