... gear transmission, stepless speed regulating, the brake adopts hydraulic disk brake and dynamic brake together, with simple structure and reliable ... 1200)1200(1600)1940(2600)Gearsone gear, stepless speed regulatingBrakehydraulic disk brake + dynamic brakeEATON brake + dynamic brakeCrown blockTC135TC170TC225TC315TC450Traveling block ... ,oil rig,OIL DRILLING RIG OIL DRILLING RIG,china factory price