[High Quality Riveter]: This riveter uses the original pneumatic rotor for increased precision. The precision movement is made from selected steel. The spindle, pinion and bearing are perfectly matched to ensure that the rotation is smooth, stable and lasts for a long time. With its superior power and performance, it brings you cost-effective professional products. [Easy to use]: The nut gun is easy to use.Use the pneumatic riveter to align the nut, then lift the wrench of the trigger F, then pull the trigger screw to make it turn and pull the nut to deform it flat. By lifting the key R, then tightening the screw, the nut allows you to complete an operation. With the self-locking design, the bit can be replaced quickly and easy to operate. [Multi-function]: The riveting machine adopts the design of limitless speed regulation, and has the following characteristics: freely control the flow of air inlet. It can adjust the air inlet speed, increase the left turn and decrease the right