LT is an oilfield clutch mainly for drilling equipment made in China, Russia and Romania. It is interchangeable with Drawworks Lanzhou LS®, Honghua® and Upetrom® products.It transmits torque via sidewalls, absorbs shock loads and vibration to safeguard drive components. Torque build-up is controlled by the air tube pressurization rate. Its neoprene rubber tube dampens torsional vibration. The flexible structure accommodates minor shaft misalignment and axial movement.