Opening diameter: 27.5 in;Max. static load: 4500 kN;Rate torque: 27.5 KN.m;Max. speed: 250 rpm;Dimensions: (L*W*H): 2403mm*1670 mm*680 mm;Transmission ratio: 3,67;Standards: API 7K;;;Kerui’s and other rig manufacturers drilling and workover rig