Makita delivers corded grinding performance without the cord with the 18-Volt LXT lithium-ion brushless 4-1/2 in. Cut-off/angle grinder with electric brake (XAG09Z， tool only， batteries and charger sold separately). It's powered by a Makita brushless motor for longer run time， increased power and speed， and longer tool life. For the most demanding applications， Makita's exclusive automatic speed change technology automatically adjusts speed and torque during operation for optimal performance. For added convenience， the XAG09Z has an electric brake that stops the wheel in 2 seconds or less upon release of the switch. The XAG10Z is ideal for grinding， cutting and sanding a wide range of materials including tile， concrete， pipe， conduit， and more. For improved tool performance and extended battery life， Makita created star protection computer controls. Star protection is communication technology that allows the star protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading， over-discharging and overheating. For increased versatility， the tool can also be powered by Makita 18-Volt LXT and compact lithium-ion batteries with the star symbol on the battery indicating star protection inside.

Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity

Active Feedback-sensing Technology (AFT) turns the motor off if rotation of the wheel is suddenly forced to stop

Automatic speed change technology adjusts speed and torque during operation for optimum performance

BL brushless motor eliminates carbon brushes， enabling the BL motor to run cooler and more efficiently for longer life

Efficient BL brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge

Electronically-controlled BL brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application

Compact and ergonomic design at only 14-1/4 in. long

Weighs only 5.7 lbs. with battery (battery not included) for reduced operator fatigue

Slide switch with lock-on for operator convenience

3-stage LED gauge indicates battery charge level

Soft start suppresses start-up reaction for smooth start-ups and longer gear life

Spiral bevel gears for smoother rotations and a more efficient transfer of energy

Anti-restart protection engineered to prevent motor start up when battery is inserted with switch locked on

Efficient internal cooling is engineered for optimum performance

Wire mesh intake covers are engineered to prevent debris from entering motor

Equipped with star protection computer controls to protect against overloading， over-discharging and over-heating

Rapid optimum charger communicates with the battery's built-in chip throughout the charging process to optimize battery life by actively controlling current， voltage and temperature (battery and charger sold separately)