Features: 1. Patented and alternating switch and the motor. One-handed reversible switch and hi-tech alternating motor with 30% more horsepower than the average motor, and longer service life. This patented motor has automatic tripping function that the motor will stop automatically when the presetting value is reached. 2. Patented interlaced track clutch system. The pneumatic screwdriver uses the second generation of interlaced track clutch (MSC), having characteristic of low vibration (2.5ms), high torque accuracy (± 3%) and torque range and so on. 3. High-tech special structure with patented clutch design makes low noise, low vibration and high precision, can meet the requirements of high quality. 4. Push start system with high torque repeatability characteristics makes the operation more convenient. 5. Comfort handle. Patented anti-slip and ergonomic designation brings best balance and comfort grip feel. 6. Color torque management system which can prevent adjustment of torque because of moving during operation, and can inspect torque value by mark management. It also provides a latest unique of torque management method, using color mark to management different torque, which can be used as line torque management system, and can apply to all k series pneumatic tool. SO long as matching different colors with different of torque values, it can be used in line, and do effective of torque quality management (1pcs black torque sleeve for basic equipment, 4pcs color torque jacket for optional). 7. Quick. Light press on CAP can quickly replace screwdriver head (please refer to the 1st note of the instruction manual), and the outward redeployment of torque.