... noise, less than 80Dba under max. power.3. Set and control torque by adjusting the pressure on ... 1pc reaction arm, 1 pc air register,1 set operating instructions,1 piece of testreport , ABS ... 5%, ± .5. Optional digital air register, torque precision:3%, ± .6. Shift high/low speed mechanically , greatly ... ,1pc reaction arm, 1 pc air register,1 set operating instructions,1 piece of testreport , ABS plastic ...