Pls kindly send us your detailed specifications as follow if you are interested in our grabs.
1.What's the material will handle? Coal, sand, grain, chemical fertilizer .....
2.What's the capacity of the grab?
3.What's the maximum lifting weight of the crane?crane SWL 
4.What's the working environment?on ship or on port ?

We will offer you the best suitable grab with best price and quality. These specifications above can make it clear about your requirements.
Thanks very much for your kindly cooperation!