Rope Operated Dual Scoop Grabs With four rope、two rope and single rope configurations. Suitable to work with various types of lifting cranes to handle fine bulk materials(ave.granulation 30mm max 100mm) ,Production of our company, slag, pulley grab water by labyrinth sealing, bearing life long. Production of nickel ore in the grab dredgers, under the press on both block ChengLiang pre plate, which greatly improves the working efficiency of the grab.