Single rope touch open manual grab bucket/Single rope Mechnical clamshell grab Single rope bulk grab is an efficient tool for loading and unloading sands, coal, mineral powder and bulk chemical fertilizer. The mechanical structure for opening & closing is succinct and original. It is easy to use and can work under any circumstances in order. The grab is equipped for the crane which has single hoisting drum and used for grabbing bulk materials. Now the grabs are widely used in ports, electricity, vessel, metallurgy, preservation and transportation, and are exported in batches. The grab has been awarded Ministry and Municipal Science Progress Prize, National Invention Prize, International Invention Exhibition Gold Medals.