This spreader is suitable the double-link portal crane or jib crane, and the main paraments is as follows: 1, Suitable for 20`-40` telescopic spreader 2, Capacity under spreader: 40t 3, lifting capacity of four lugs: 10t*4 4, Dead weight: ~7800 5, dead weight of rotation hook: 1600kg 6, Power: AC380V(3phase)50Hz or 60Hz 7, IP class: IP55