It is in a nutshell. These are brushes now they sit outside the commutator. In an electric motor that's the part that spins around by removing the brushes.

angle grinders. Able to cut through a variety of materials such as metal, metal pipe, and metal rebar. These Cutting Wheels are a consumable item. Included in this package is (3) 4-1/2 in.

280 ONE+ tools Nothing beats the versatility of the RYOBI ONE+ System. There are over 280 ONE+ tools that work off one 18V battery.

Brushless motors do not contain a physical connection between brushes and the commutator. This means lower friction and higher efficiency, as less heat is generated as you work, and we've all felt how hot a grinder can get. It also means far less maintenance, since there aren't brushes to replace as they wear down.

More Efficient According to Consumer Reports, brushless motors are more energy-efficient than brushed, often running on battery power for up to 50 percent longer. Since brushless motors don't contain brushes that lose energy to friction, they have a longer battery life than brushed tools.

MORE POWER, MORE RUNTIME, MORE DURABLE RYOBI Brushless tools give better performance and increased endurance.

RYOBI introduces the RYOBI 4-1/2" Masonry Cutting Wheel Set. Silicon carbide build for fast material removal and longer life. Will fit most 4-1/2" angle grinders. Able to cut through a variety of materials such as masonry, block, brick, and concrete.

When opposed to angle grinders, cutoff tools have a lesser horsepower range. They can only perform small-scale, low-power cutting tasks as a result. However, an angle grinder has three to five times the horsepower of the cutoff tool. Because of this, you may use it for more fabrication operations.

Japanese Ryobi Limited (リョービ株式会社, Ryōbi Kabushiki-gaisha, Japanese: [ɾʲoːꜜbi]; English: /raɪˈoʊbi/ or /riˈoʊbi/) is a Japanese manufacturer of components for automobiles, electronics, and telecommunications industries.

Ryobi Tool Manufacturing Internationally, Ryobi and its parent company TTI manufacture a large majority of its cordless power tools and battery-powered products overseas. The company has factories in China, Vietnam, Mexico, Germany, the Czech Republic, and the United States.

With a no load speed of 10, 000Rpm and a 125mm cutting disc, this angle grinder is ideal for cutting as well as grinding. The brushless motor provides more power and run-time per charge, and lasts up to 10x as long as standard brushed motors.

The Batavia Brushless Angle Grinder is the perfect tool for fast, precise, and safe cutting, debrurring and grinding. It has a Brushless motor, which provides more power and a longer run-time. The discs of this DIY Brushless Angle Grinder can be easily changed and replaced, thanks to the spindle lock function.