Features and Benefits:OUTPOWER: Makita-built brushless motor along with 40V max XGT® battery combine to deliver powerful grinding and up to 60% faster cutting speed than predecessor models*;OUTSMART: Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity;OUTLAST: Electronic current limiter helps protect the motor from overload in high torque application;Active Feedback-sensing Technology (AFT®) turns the motor off if rotation of the wheel is suddenly forced to stop;Anti-restart protection engineered to prevent motor start up when battery is inserted with switch locked on;Slide switch with lock-on for operator convenience;Quick guard rotation allows easy tool-less adjustment for increased productivity;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;Reinforced metal gear housing engineered for maximum job site durability;Wire mesh intake covers are engineered to prevent debris from entering motor;Extreme Protection Technology (XPT™) is engineered for improved dust and water resistance for operation in harsh conditions;Rubberized soft grip provides increased comfort on the job;Compact at only 16-1/8" long;ideal for tight spaces;The digital communication within XGT® optimizes performance to provide up to 2X longer sustained power under heavy-load applications;The digital communication within XGT® actively monitors and protects against overload, over-discharge and overheating;XGT® Tools and Batteries are designed with a multi-layer contact interface for more constant power delivery to take on high-current demands;XGT® Batteries feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications (batteries not included);The XGT® Rapid Charger with dual-fan design circulates air through the battery to cool the battery and circuit board quickly for faster charging (charger not included);The XGT® Rapid Charger�s digital display indicates battery charge level (-80%, +80%, 100%);The XGT® Rapid Charger�s built-in chip thoroughly communicates during the charging process to control current, voltage, and temperature for more efficient charging;The 40V max XGT® Brushless Cordless 4-1/2" / 5” Cut-Off/Angle Grinder with Electric Brake (GAG01Z, tool only) delivers corded grinding performance without the cord for the most demanding applications. It's powered by a Makita-built brushless motor which delivers 8,500 RPM for heavy-load applications and increased power and speed. The GAG01Z offers up to 60% faster cutting speed when cutting #5 (5/8”) rebar. It is ideal for grinding and cutting a wide range of materials including tile, concrete, pipe, conduit, and more.An electric current limiter helps protect the motor from overload in high-torque applications. Additional features include an electric brake that stops the grinding or cut-off wheel in 2 seconds or less and Active Feedback-sensing Technology (AFT®) that turns the motor off if rotation of the wheel is forced to a stop.A slide switch with lock-on is convenient, while quick guard rotation provides tool-less adjustments for increased productivity. Anti-restart protection is engineered to prevent motor start-up when the battery is inserted while the slide switch is locked on. A soft start suppresses start-up reaction and provides smooth start-ups.Wire mesh intake covers are engineered to prevent debris from entering the motor. The GAG01Z is also equipped with Makita's Extreme Protection Technology (XPT™), a series of protective seals inside the tool. XPT is designed to improve a tool�s operation in harsh conditions by channeling water and dust from key internal components. Reinforced metal gear housing provides additional durability on the job site.XGT is a system of equipment, tools, batteries and chargers utilizing 40