1. Lower noise. 2. Multi-purpose electric screwdriver set. 3. Can complete drilling, pulling rivets and screwing, as long as you have a drill. 4. Can solve these problems: a product of the nut to be installed on the outside, and the inside of the space is small, can not let the sub-riveting machine pressure into the pressure riveting and buds and other methods can not meet the strength requirements. 5. Easy to operate. 6. It has two power supply: charger and battery. 7. Reversible power switch.
