We may not have superpowers, but we do have power tools. Power tools cover every aspect of our lives -- medical care, manufacturing, construction, rescue, and so on. In the industrial revolution of the 19th century, factories used gas, steam and electricity to give tools more power. Since the 1960s, power tools have been re-engineered to work in the home. Power tools have a global market share of $23.4 billion. About 40% of that comes from North America, 22% from Asia and 27% from Europe, with power tools accounting for about 75% of all power tools sold.

The power of a power tool depends on how much voltage it can withstand. Think of the voltage as water pressure. The same is true of voltage. The more volts there are in a tool, the more power it can generate. Getting enough voltage also meant plugging it in, but the discovery of batteries changed all that. Battery-powered tools were first used on the moon in the 1960s. The Apollo astronauts needed a small hand-held electric drill to drill into the lunar surface to collect soil samples, so engineers designed a special battery pack of power tools. This unique invention was first used in the 1979 hand-held wireless vacuum cleaner. That led to a revolution in home power tools.

 The power tools we know and use rely on human energy, electricity, gasoline and compressed air, but the tools used by professionals are more powerful. In some car RACES we often see car mechanics using pneumatic wrenches to remove tires, because RACES have time constraints and they have to race against time to save time. It only takes 12 seconds to remove the nuts from the four tyres because the lightning wrench can spin at 25,000 revolutions per minute. Its power comes from compressed air, compared with a standard pneumatic wrench of 2,000 revolutions per minute. The gun is 12.5 times faster than they are, and this speed can remove a nut from a tire in 0.2 seconds. If using standard pneumatic wrench. Instead of a thunderbolt, the 12 seconds it takes to change a tire becomes three minutes.

 In the 19th century there was a legend story, the protagonist named John Henry was a railroad worker, the worker is the strongest workers at that time, his work is the nails into the track, no one can than him, then gave birth to a power tool, pneumatic hammer appearance so that people no longer need to use brute force to nailing. The worker fearlessly challenges the hammer and the man-machine battle begins. Who can beat faster? In the end, Henry the human won. But as he overworked his strength, he died a short time later. Of course, that's just a myth. In this day and age, even the hammer and nail cannot escape the elimination of human progress.

  A new power tool, the nail gun, is at least 10 times faster than a hammer and can fire 100 nails per minute, far outweighing the efficiency of human labor. Then there's our most common chainsaw, which USES a two-stroke starter engine. It's small but it has a powerful engine that can drive things like lawn mowers and motorcycles. The invention of electric tools, which allow operators to pull on a rope to start a starter and drive steel teeth in the chain to cut through wood, revolutionised the construction industry.

 Of course, power tools can save lives in addition to being used for manufacturing work. Power tools can also be used with surgical precision. And technology often means the need for power tools, and we all know that surgeons make incisions with surgical blades, and the problem is that incisions like that bleed, and now there's a power tool for surgery. Its needle tip heats up, and it cuts and coagulates the wound like a scalpel. Coagulation means stopping bleeding, which is very important for surgeons. It is driven by human beings to turn materials into never-ending high-tech equipment, injecting real power into power tools.